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href='http://www.3586511.com/news/359.html'>http://www.3586511.com/news/359.html</a></p> <p>发布旉™—´ : 2022-04-21</p> </div> <div class="news_info"> <p><p style="color:#666666;font-family:arial, helvetica, clean, sans-serif;font-size:13px;background-color:#FFFFFF;"> <span style="font-size:16px;"> <p> <span style="font-size:16px;">O前言</span> </p> <span style="font-size:16px;">        åœ?b><a href="http://www.3586511.com/" target="_blank" style="font-weight:bold">助磨å‰?/a></b>使用˜q‡ç¨‹ä¸­ï¼Œ¾lå¸¸¼„°åˆ°å®¢æˆ·åæ˜ ä½¿ç”¨åŠ©ç£¨å‰‚后水惔的标准稠度用水量增加或者ä‹É用助¼‚¨å‰‚的水泥与混凝土外加剂相容性变差、需要增加减水剂用量才能使æ؜凝土辑ֈ°åŽŸæ¥çš„工作性能½{‰é—®é¢˜ã€‚这涉及到水泥的需水量问题åQŒä¸Žæ°´æƒ”熟料矿物¾l„成、æ؜合材¿Uç±»å’Œæ•°é‡ã€æ°´æ³¥é¢—¾_’粒度分布等诸多因素有关。本文主要借助公开的文献资料阐˜q°åª„响水泥需水量的主要原因,òq¶ç®€è¦åˆ†æžä‹É用助¼‚¨å‰‚å¯ÒŽ°´æ³¥éœ€æ°´é‡é€ æˆçš„媄响ã€?/span><br /> <span style="font-size:16px;">        å½±å“æ°´æƒ”标准½E åº¦ç”¨æ°´é‡çš„原因分析</span><span style="font-size:16px;">水惔加水拌和后会形成å…ähœ‰ä¸€å®šæµåŠ¨æ€§çš„‹¹†ä½“åQŒå…¶ä¸­çš„拌和水按用途分可分为四个部分:(1)填充æ°ß_¼ŒæŒ‡å¡«å……于水惔颗粒之间的间隙所需的水åQ?2)润湿æ°ß_¼Œæ¶¦æ¹¿æ°´æƒ”颗粒表面åQŒåœ¨æ°´æƒ”颗粒表面形成一层水膜,使水泥颗¾_’间可自由滑动所需的水åQ?3)水化æ°ß_¼Œæ»¡èƒö水惔加水初期的水化所需的化学结合水åQ?4)吔R™„æ°ß_¼Œå¸æ”¶åˆ°æ°´æ³¥é¢—¾_’内部填充内部空隙的水ã€?/span><span style="font-size:16px;">水惔标准½E åº¦ç”¨æ°´é‡æ˜¯æŒ‡ä‹É水惔‹¹†ä½“辑ֈ°ä¸€å®šå¯å¡‘性和‹¹åŠ¨æ€§æ—¶æ‰€éœ€è¦çš„拌合水用量,是水泥性能的重要指标。水泥标准稠度用水量的大ž®ä¸ä»…媄响水泥的凝结旉™—´å’Œå®‰å®šæ€§ï¼Œ˜q˜ç›´æŽ¥åª„响æ؜凝土的水灰比åQŒè¿›è€Œåª„响æ؜凝土的强度、密实性、流动性等使用性能ã€?/span></span> </p> <p style="color:#666666;font-family:arial, helvetica, clean, sans-serif;font-size:13px;background-color:#FFFFFF;"> <span style="font-size:16px;"><br /> <p> <span style="font-size:16px;">1åQ?熟料矿物¾l„成寚wœ€æ°´é‡çš„媄å“?/span> </p> <span style="font-size:16px;">造成熟料矿物需水量不同的原因主要是不同熟料矿物的水化反应速度和水化反应的方式不同åQŒæ°´åŒ–速率快的cåQŒA矿物在拌合水加入时即发生水化反应消耗部分水åQŒæ°´åŒ–水需求量大,辑ֈ°æ‰€éœ€‹¹åŠ¨åº¦æ—¶åQŒç”¨æ°´é‡ž®±å¤§åQŒè€Œæ°´åŒ–反应慢的矿物如cåQšs在标准稠度用水量‹¹‹è¯•çš„时间内åQŒå‡ ä¹Žä¸å‘生水化反应åQŒæ°´åŒ–水需求量ž®±å°ã€‚å…¶‹Æ¡ï¼Œä¸åŒçŸ¿ç‰©çš„密度也不一æ øP¼Œå¯†åº¦ž®çš„矿物åQŒå…¶è´¨é‡ä½“积大,润滑光™¢—¾_’表面åŞ成水膜所需的水量就大。大量研½I¶è¡¨æ˜Žï¼Œç†Ÿæ–™çŸ¿ç‰©ä¸­éœ€æ°´é‡ç”±å¤§åˆ°å°™åºåºä¸ºï¼šcåQŒA>cåQŒs>c。AF>cåQšSåQŒå…¶ä¸­ï¼Œc4含量寚wœ€æ°´é‡å½±å“æœ€å¤§ï¼Œæ¯å¢žåŠ?åQ…çš„CA含量åQŒæ ‡å‡†ç¨ åº¦ç”¨æ°´é‡ä¹Ÿå¤§¾U¦å¢žåŠ?åQ…,几乎呈直¾U¿å…³¾p…R€?/span></span> </p> <p style="color:#666666;font-family:arial, helvetica, clean, sans-serif;font-size:13px;background-color:#FFFFFF;"> <span style="font-size:16px;"><br /> <p> <span style="font-size:16px;">1åQ?混合材对需水量的媄å“?/span> </p> <span style="font-size:16px;">混合材对需水量的媄响,取决于æ؜合材的种¾c…R€ç”¨é‡åŠ¾l†åº¦½{‰å› ç´ ã€‚从宏观状态来è¯ß_¼Œæ··åˆæçš„加入会媄响水泥的堆积状态,¾_‰ç£¨çš„较¾l†çš„混合材可填充于熟料颗¾_’之间的½Iºéš™åQŒå‡ž®‘填充水用量åQŒä½†ç”׃ºŽå®ƒä»¬æ›´ç»†åQŒæ¯”表面¿U¯æ›´å¤§ï¼Œå…¶æ¶¦æ¹¿æ°´é‡ä¹Ÿå¢žå¤§åQŒå› æ­¤ï¼Œæ··åˆæå¯¹éœ€æ°´é‡çš„媄响取决于其填充水与其润湿水的相对大小ã€?/span><span style="font-size:16px;">低等¾U§ç²‰ç…¤ç°(含碳量高、烧失量高、含油质)、沸矟뀁煤矸石½{‰ç«å±Þq°è´¨æ؜合材¾l“构疏松多孔åQŒå†…表面¿U¯å¾ˆå¤§ï¼Œå®ÒŽ˜“吸收水分åQŒæ·»åŠ è¿™¾cÀL؜合材后,吔R™„水量增加åQŒéœ€æ°´é‡ä¸€èˆ¬ä¼šç›¸åº”增加。高品质¾_‰ç…¤ç°çš„球åŞ度高åQŒå…·æœ‰ä¸€å®šçš„减水效应和微集料效应åQŒå¯å‡å°‘水惔需水量”。石灰石易磨性好åQŒç›¸åŒç²‰¼‚¨æ¡ä»¶ä¸‹åQŒæ¯”熟料¼‚¨çš„更细åQŒä¸”早期基本不参与水化反应,化学水消耗减ž®‘,在合适的掺量下会降低水惔需水量ã€?/span><br /> <span style="font-size:16px;"><br /> </span></span> </p> <p style="color:#666666;font-family:arial, helvetica, clean, sans-serif;font-size:13px;background-color:#FFFFFF;"> <span style="font-size:16px;"><span style="font-size:16px;">1åQ?矌™†¿Uç±»å¯šwœ€æ°´é‡çš„媄å“?/span><span style="font-size:16px;">矌™†ä½œäؓ¼‹…酸盐水泥的¾~“凝剂,是水泥工业不可缺ž®‘的原料åQŒåº”用于水惔生äñ”中的矌™†æœ‰å¤©ç„¶äºŒæ°´çŸ³è†ã€ç¡¬çŸŒ™†åŠè„±¼‹«çŸ³è†ã€ç£·çŸŒ™†½{‰å·¥ä¸šå‰¯äº§çŸ³è†ï¼Œå› äؓ不同矌™†çš„化学组成、溶解速率、溶解度都不相同åQŒå› æ­¤ï¼ŒçŸŒ™†¿Uç±»å¯ÒŽ°´æ³¥éœ€æ°´é‡ä¹Ÿæœ‰å¾ˆå¤§å½±å“ã€‚张雅钦通过ž®ç£¨ç ”究矌™†ä¸åŒ¿Uç±»å’Œçº¯åº¦å¯¹æ°´æƒ”标准½E åº¦ç”¨æ°´é‡çš„影响åQŒç ”½I¶å‘玎ͼŒå¤©ç„¶äºŒæ°´çŸŒ™†çš„纯度越高,水惔标准½E åº¦ç”¨æ°´é‡è¶Šž®ï¼›åœ¨æ°´æ³¥å…¶å®ƒé…æ¯”相同的情况下,使用è„Þq¡«çŸŒ™†åˆ¶å¤‡çš„水泥比使用¾U¯åº¦ä½Žçš„天然二水矌™†ç”¨æ°´é‡æ›´ä½Žã€‚李楠等å¯ÒŽŸ æª¬é…¸æ¸£ã€é’›çŸŒ™†ã€çƒŸæ°”脱¼‹«çŸ³è†?¿Uå·¥ä¸šå‰¯äº§å“çŸŒ™†ä»£æ›¿å¤©ç„¶çŸŒ™†ä½œç¼“凝剂˜q›è¡Œäº†è¯•éªŒç ”½IӞ¼Œå‘现æŽÞZh柠檬酸渣的水泥需水量有所增大ã€?/span><br /> <span style="font-size:16px;"><br /> </span></span> </p> <p style="color:#666666;font-family:arial, helvetica, clean, sans-serif;font-size:13px;background-color:#FFFFFF;"> <span style="font-size:16px;"><span style="font-size:16px;">1åQ?¼„±å«é‡å¯¹éœ€æ°´é‡çš„媄å“?/span><span style="font-size:16px;">熟料中碱含量增加åQŒä¼šåŠ é€Ÿæ°´æ³¥æ—©æœŸæ°´åŒ–速率åQŒåŠ å¤§åŒ–学水的消耗,水惔标准½E åº¦éœ€æ°´é‡å¢žå¤§ã€‚程新联â€?1½{‰é€šè¿‡ç ”究发现åQŒå½“熟料中碱含量ž®äºŽoåQ?åQ…æ—¶åQŒç¢±å«é‡å¯¹ç†Ÿæ–™æ ‡å‡†ç¨ åº¦ç”¨æ°´é‡å½±å“ä¸æ˜Žæ˜¾ï¼Œå½“碱含量大于1åQ?åQ…,特别是K20含量­‘…过1åQ?åQ…æ—¶åQŒç†Ÿæ–™çš„标准½E åº¦ç”¨æ°´é‡ä¼šå—到较大影响åQŒæ˜¾è‘—增加ã€?/span><br /> <span style="font-size:16px;"><br /> </span></span> </p> <p style="color:#666666;font-family:arial, helvetica, clean, sans-serif;font-size:13px;background-color:#FFFFFF;"> <span style="font-size:16px;"><span style="font-size:16px;">1åQ?水惔颗粒¾_’度分布及åŞè²?/span><span style="font-size:16px;">拌合水中的填充水和润湿水都与水惔的颗¾_’粒度分布有养I¼Œå‡è®¾æ°´æƒ”颗粒为球形åƈ且质地均匀åQŒå¯ä»¥æŽ¨å¯¼å‡º˜q™éƒ¨åˆ†çš„水灰比计½Ž—å…¬å¼?/span><br /> <p> <br /> </p> <span style="font-size:16px;">其中åQŒæ°´æ³¥é¢—¾_’体¿U¯åˆ†æ•îCؓVgåQŒå›ºä½“颗¾_’的堆积密度ä¸?/span><span style="font-size:16px;">φ</span><span style="font-size:16px;">åQŒé¢—¾_’表面的水膜厚度ä¸?åQŒæ°´æ³¥çš„比重为påQŒæ°´æ³¥çš„比表面积为S。从公式可以看出åQŒåœ¨æ¯”表面积一定的情况下,水惔需水量与堆¿U¯å¯†åº¦æˆåæ¯”åQŒè€Œæ°´æ³¥çš„堆积密度与水泥的颗粒分布有关¾p…R€‚水泥颗¾_’粒度分布较宽时åQŒæ°´æ³¥çš„堆积密度较大åQŒè¿™æ—¶æ°´æ³¥éœ€æ°´é‡ç›¸å¯¹è¾ƒå°åQŒè€Œæ°´æ³¥é¢—¾_’粒度分布较½H„æ—¶åQŒå †¿U¯å¯†åº¦è¾ƒž®ã€æ ‡å‡†ç¨ åº¦ç›¸å¯¹è¾ƒå¤§ã€?/span><span style="font-size:16px;">另外åQŒæ°´æ³¥é¢—¾_’åŞ貌对需水量也有一定媄响,ç?形度高的水惔润湿颗粒表面形成水膜所需的润湿水较球形度低的水惔ž®‘,且球形度高的水惔颗粒堆积密实åQŒå¡«å……空隙水需用量ž®‘,而不规则水惔颗粒在堆¿U¯æ—¶æ˜“相互支撑盘错,孔隙率更高,填充½Iºéš™æ°´éœ€ç”¨é‡ä¹Ÿé«˜ã€‚因此,从颗¾_’åŞ貌来说颗¾_’球形度高时åQŒå…·æœ‰è¾ƒž®çš„标准½E åº¦éœ€æ°´é‡åQŒè€Œç‰‡çŠ¶ã€æ£±è§’等不规则åŞ貌水泥颗¾_’较多时åQŒæ°´æ³¥æ ‡å‡†ç¨ åº¦éœ€æ°´é‡è¾ƒé«˜ã€?/span></span> </p> <p style="color:#666666;font-family:arial, helvetica, clean, sans-serif;font-size:13px;background-color:#FFFFFF;"> <span style="font-size:16px;"><br /> <span style="font-size:16px;">2助磨剂的使用å¯ÒŽ°´æ³¥éœ€æ°´é‡çš„媄å“?/span><span style="font-size:16px;">2åQ?助磨剂物质本íw«å¯¹æ°´æƒ”需水量的媄å“?/span><span style="font-size:16px;">选取了äÍ沂æ“v螺新材料¿U‘技有限公司的早强型助磨剂I A、复合助¼‚¨å‰‚â…¢A、ⅢB及缓凝型助磨剂ⅣA½{‰åŠ©¼‚¨å‰‚产品及助¼‚¨å‰‚主要原料三乙醇胺(TEA)、三异丙醇胺(TIPA)、二乙醇单异丙醇èƒ?DEIPA)研究了他们对水惔需水量的媄响。äؓ排除水惔原料¾l„成、颗¾_’组成等因素寚wœ€æ°´é‡äº§ç”Ÿçš„媄响,实验采用直接掺加法,卛_…ˆ¾_‰ç£¨å¥½ä¸åŠ ä“Q何添加剂的空白水泥,然后æ·ÕdŠ ä¸åŒåŠ©ç£¨å‰‚加水搅拌,‹¹‹å®šæ ‡å‡†½E åº¦ç”¨æ°´é‡ã€‚其中粉体äñ”品I A½{‰æŽºé‡æ›¿ä»£æ°´æ³¥ï¼Œž®†åŠ©¼‚¨å‰‚与空白水泥在æ·äh–™å™¨ä¸­æ··åˆå‡åŒ€åŽï¼Œå†åŠ æ°´è¿›è¡Œè¯•éªŒï¼Œå…¶ä½™æ¶²ä½“产品½{‰æŽºé‡ä»£æ›¿æ‹Œåˆæ°´ž®†åŠ©¼‚¨å‰‚加入水中混合均匀后,再进行试验。水泥配合比见表1åQŒåŽŸæ–™åŒ–学成分见è¡?åQŒè¯•éªŒç»“果见è¡?ã€?/span><br /> <p> <br /> </p> <p> <br /> </p> <span style="font-size:16px;">ç”Þq»“果可知,除早强型助磨剂I A的加入会引è“v水惔标准½E åº¦ç”¨æ°´é‡å°‘量上升以外,其它助磨剂及主要原料均不会引èµïL”¨æ°´é‡çš„上升,ⅢA、ⅢB的加入不影响需水量åQŒâ…£A、TEA、TIPA、DEIPA的加入会降低需水量。这可能是因为助¼‚¨å‰‚的主要原料三乙醇胺、三异丙醇胺均有一定的引气作用åQŒå¯ä½¿æ°´æ³¥é¢—¾_’间的分散变得相对容易,且醇胺物质可促进AFt的生成,生成的AFt覆盖在水泥熟料颗¾_’表面,é˜È¢cåQŒs的进一步水化,延缓‹¹†ä½“¾l“æž„çš„åŞ成,因此体系黏度变低、化学水用量也减ž®‘ã€?/span></span> </p> <p style="color:#666666;font-family:arial, helvetica, clean, sans-serif;font-size:13px;background-color:#FFFFFF;"> <span style="font-size:16px;"><br /> <span style="font-size:16px;">2åQ?助磨剂大¼‚¨åº”用时需水量变化的原因分æž?/span> <p> <span style="font-size:16px;">æ ÒŽ®æ±Ÿè¥¿æŸæ°´æ³¥åŽ‚反映的ä‹É用助¼‚¨å‰‚引è“v水惔需水量变高的问题,我们通过分析使用助磨剂前后水泥æ؜合材使用情况及水泥颗¾_’çñ”配的变化åQŒåˆ¤æ–­è¯¥åŽ‚水泥需水量变高的原因有以下两点åQ?1)混合材炉渣、粉煤灰使用量加大,所需吔R™„水增加。经与水泥厂家进一步沟通,发现他们用的燃煤炉渣疏松多孔åQŒç”¨çš„粉煤灰ä¸ø™„±¼‹«ç°åQŒå‡ ä¹Žæ— çƒåŞ颗粒存在åQŒåŞ状不规则åQŒä¸”分布有较多细孔,增加炉渣、粉煤灰用量后,吔R™„水量必定会增大,且这¾cȝ²‰ç…¤ç°å‡ ä¹Žæ— â€œæ»šç å‡æ°´â€æ•ˆåº”,因此åQŒå¢žåŠ å®ƒä»¬çš„用量后,用水量呈增大­‘‹åŠ¿ã€?2)水惔颗粒变细åQŒæ‰€éœ€æ¶¦æ¹¿æ°´å¢žåŠ ã€‚在该厂水惔生äñ”˜q‡ç¨‹ä¸­ï¼Œä¸»è¦æ˜¯é€šè¿‡æ¯”表面积来控制水泥的¾l†åº¦æŒ‡æ ‡åQŒå› ä¸ºåŠ©¼‚¨å‰‚的主要成分äؓ三乙醇胺、乙二醇、甘油等表面‹zÀL€§ç‰©è´¨ï¼Œä½¿ç”¨åŠ©ç£¨å‰‚后åQŒæ°´æ³¥é¢—¾_’变得较为润滑,在ä‹É用勃氏透气法测定比表面¿U¯æ—¶åQŒç©ºæ°”æ›´å®ÒŽ˜“½I¿è¿‡åQŒè™½ç„¶æ¯”表与使用助磨剂前一æ øP¼Œä½†æ°´æ³¥é¢—¾_’实际已¾lå˜çš„æ›´¾l†ã€‚因为水泥颗¾_’变得更¾l†ï¼Œå®žé™…的比表面¿U¯è¾ƒåŠ©ç£¨å‰‚ä‹É用前是偏高的åQŒå› æ­¤æ‰€éœ€æ¶¦æ¹¿æ°´é‡å¢žåŠ åQŒä¹Ÿä¼šå¼•èµ·éœ€æ°´é‡å˜å¤§ã€?/span> </p> <p> <br /> </p> <p> <br /> </p> <span style="font-size:16px;">2åQ?助磨剂应用引起需水量变化后水泥与混凝土外加剂适应æ€?/span> <p> <span style="font-size:16px;">水惔生äñ”厂ä‹É用助¼‚¨å‰‚后,¾lå¸¸æœ‰åŽ‚家反馈水泥的需水量增加了,从而担心水泥与混凝土外加剂适应性变差,影响其水泥在商æ؜站的使用ã€?/span> </p> <p> <span style="font-size:16px;">˜q‘年来,关于<a href="http://www.3586511.com/snzmj/" target="_blank">水惔助磨å‰?/a>与æ؜凝土外加剂的适应性的问题已经成äؓ讨论和研½I¶çš„热点åQŒä¸”也有较多的研½I¶æ–‡çŒ®å…¬å¼€ã€‚从分子¾l“构看,水惔助磨剂主要是有机ž®åˆ†å­ï¼Œå‡æ°´å‰‚是大分子聚合物åQŒä¸¤è€…没有相互反应的官能团,所以助¼‚¨å‰‚本èín不会与外加剂反应˜q›è€Œä¼¤å®Ïx°´æ³¥ä¸Žå¤–加剂的适应性,相反有时会改善水泥与外加剂的适应性。表6为江苏某水惔公司使用我公司ⅢB型助¼‚¨å‰‚后,水惔标准½E åº¦éœ€æ°´é‡åŠæ°´æ³¥å‡€‹¹†æµåŠ¨åº¦è¯•éªŒæ•°æ®ã€?/span> </p> <p> <br /> </p> <p> <br /> </p> <p> <span style="font-size:16px;">由数据可看出åQŒåŠ å…¥æ°´æ³¥åŠ©¼‚¨å‰‚后,水惔标准½E åº¦å¢žåŠ äº†oåQ?åQ…,但水泥净‹¹†æµåŠ¨åº¦å? h保留值均有增加,说明水惔与外加剂适应性变好。因此,在ä‹É用水泥助¼‚¨å‰‚˜q‡ç¨‹ä¸­ï¼Œä¸èƒ½æ­¦æ–­è®¤äؓ加入助磨剂会å¯ÆD‡´æ°´æƒ”标准½E åº¦éœ€æ°´é‡å¢žåŠ åQŒä»Žè€Œä‹É水惔与外加剂适应性变差,而应从对水惔与外加剂适应性的各个影响因素˜q›è¡Œåˆ†æžåQŒæŸ¥æ‰‘ÖŽŸå› ï¼Œè§£å†³é—®é¢˜ã€?/span> </p> <p> <br /> </p> <p> <span style="font-size:16px;">3¾l“论</span> </p> <p> <span style="font-size:16px;">¾l¼åˆä¸Šè¿°è®¨è®ºåQŒç†Ÿæ–™çŸ¿ç‰©ç»„成、æ؜合材的种¾cÖM¸Žç”¨é‡ã€çŸ³è†ç§¾c…R€ç¢±å«é‡ã€æ°´æ³¥é¢—¾_’分布等都媄响水泥的需水量ã€?/span><span style="font-size:16px;">助磨剂直接掺加法实验表明åQŒæ°´æ³¥çš„需水量与助¼‚¨å‰‚没有直接的关¾p»ï¼Œä½†æ˜¯å› äؓ使用助磨剂会改变水惔的颗¾_’çñ”配、增加水泥æ؜合材用量½{‰åŽŸå› ï¼Œä¼šé—´æŽ¥åª„响水泥的需水量。对市场上反馈的水惔需水量变动问题要结合实际查扑֎Ÿå› ã€?/span> </p> </span> </p> <p> <br /> </p> <p> <span style="font-size:16px;">        <a href="http://www.3586511.com/" target="_blank">‹z›é˜³å¥¥ç™¾æ€ç‰¹æ°´æƒ”技术有限公å?/a>是一家致力于醇类水惔助磨剂基¼‹€åŽŸæ–™ç ”发的生产型企业。拥æœ?000òqÏx–¹¾cÏx ‡å‡†åŒ–生äñ”车间åQŒä¸‰ç™¾ä½™å®¶å®¢æˆøP¼Œòq´äñ”å€ÆD¿‡äº¿å…ƒã€‚å…¬åæ€¸»è¦äñ”品‘新型聚å?b>多元é†?/b>’和‘活性多元醇胺’因助磨增效作用强尤其是½E›_®šåŒ€è´¨å§“好而得到市场光大用户高度认可。现已逐步成äؓ水惔助磨剂行业专用基¼‹€åŽŸæ–™åQŒæ¬¢˜qŽäº†è§£æ›´å¤šæœ‰å…›_…¬å¸åŠå…¶äñ”品信息ã€?/span> </p></p> </div> <div class="tag"> <p>相关标签åQ?a href='/key.aspx?k=%e5%8a%a9%e7%a3%a8%e5%89%82'>助磨å‰?/a>,</p> <p><div>上一æ?<a 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