[Double-layer ceramic technique for restoring severely discolored nonvital maxillary anterior teeth: a case report]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiChen J, Yin L.
europepmc +1 more source
[Effect of different polymerization methods on shear bond strength between polymethyl methacrylate and silicone soft liner]. [PDF]
Hua Xi Kou Qiang Yi Xue Za Zhi, 2014 Zhang F +5 more
europepmc +1 more source
[Digital aesthetic-driven flowable resin injection restoration]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiLi Y +6 more
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, 2012 特殊的地理条件、气候环境,橡胶种植已成为景洪市的优势产业。改革开放以来,景洪橡胶种植面积增长迅速,橡胶种植改变了农业产业结构,提高了农民的收入水平。农作物播种面积逐渐下降,橡胶、茶叶种植呈现上升的趋势。以主要农作物种植面积为解释变量,对农民人均纯收入进行了多重共线性回归,结果显示:①橡胶种植面积与农民纯收入的回归拟合程度很高,种植面积增加1万hm2时,农民人均纯收入增加386元;占人均纯总收入增加额的75.94%。耐用消费品支出与橡胶种植面积也表现了较高的相关性,耐用消费品支出和干胶产量的相关性为0 ...
薛静静, 沈镭, 刘立涛, 高天明
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[Recent advances on environmental occurrence， risk and analytical methodologies of synthetic phenolic antioxidants]. [PDF]
Se PuLiu SS +6 more
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Huli yanjiu, 1994 采用硅橡胶涤纶丝网颅骨成型片行颅骨修补术的手术配合２３５０００安徽省淮北市人民医院仲民，张鲲鹏关键词颅骨修补术，硅橡胶涤纶丝网，手术配合ＣｏｏｐｅｒａｔｉｏｎｏｆＮｕｒｓｅｓｉｎＰｅｒｆｏｒｍｉｎｇｏｆＣｒａｎｉｏｐｌａｓｔｙｗｉｔｈＣｒａｎｉａｌＭ...
doaj
[Fitness of onlays fabricated with direct and indirect CAD/CAM technology <i>in vitro</i>]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanQian K, Liu Y.
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[Simultaneous determination of seven dimethylcyclosiloxanes in cosmetics of different formulation systems by gel permeation chromatography purification-gas chromatography-tandem mass spectrometry]. [PDF]
Se Pu, 2022 Xiao G, Yuan L, Luo C, Luo X, Huang Y.
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Method and equipment for rubber vulcanization
, 2010 本发明涉及一种橡胶件制品热硫化工艺的方法,具体说是一种橡胶硫化方法及设备。首先将工件缠绕少量的已经混炼好的橡胶,然后放置模具下模型腔中,把上模与下模合在一起,把加料罐放在上模注胶口处,罐体中放入一定量的混炼胶,然后把加料罐芯体放入加料罐中,再拧上排气嘴,最后将模具放置硫化机中,缓慢加压。当排气嘴出胶后,关闭排气阀,继续加压5～10秒(根据工件大小而定),后停止加压,开始保压至硫化时间结束为止。本发明适合带电缆及不带电缆的橡胶件的硫化。其结果是橡胶件内部结构致密、坚实、无气泡产生、表面光滑 ...
邢家富, 孙明祺, 周宝德
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