1、

Aiming at shortcomings in construction of wall plaster such as peeling, crumble away and cracking, comparative study is made on effect of retarder, water retention agent and plaster base powder selections upon plastering crack and construction quality in this paper.

针对粉刷石膏在施工中存在掉粉、脱落和开裂等问题,对比研究了缓凝剂、保水剂和石膏基粉等的选择对抹灰开裂程度和施工质量的影响。

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2、

Eighteen cases of the first metacarpal base fracture were treated by self-developed thumb-abduction tractor-fixer and proximal thumb skin traction, and a biomechanical and comparative study was made using external plaster-support fixation and crossed Kirschner-pins fixation as the control.

自行研制拇指外展牵引固定器,在固定第1掌骨的同时,行拇指近节皮肤牵引。以石膏托外固定及克氏针交叉固定为对照,进行生物力学比较研究。

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3、

Then they made clay tortillas and pressed them into big plaster molds for the base, just like the ones I used.

然后他们做成土团,把它压进胶泥模子里坐底儿,就像我以前用的那些模子。

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4、

lacquer, gunny and silk are mounted on a clay, plaster or wooden base and then dried.

制法是先在粘土,灰泥或木制模型上将夏布或绸料用漆裱上,然后干燥。

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