To overcome the shortcomings of the shear pin type joint and left-hand thread type joint, a sliding sleeve subsurface safety joint is developed.
为了克服剪钉式和反扣式两种安全接头的不足，研制出一种滑套式井下安全接头。
On the other hand, the tenacity, conductivity and shear strength of conductive adhesive were enhanced by the incorporation of SiO2/Ag composites into conductive adhesive.
同时，在引入载银二氧化硅后，导电胶的韧性、导电性和剪切强度得到有效改善。
In order to move the hand-held electric shears conveniently, proper positions at the bottoms of the shear bodies are provided with a proper amount of rollers.
为了便于手持式电动剪刀的移动，在剪刀身的底部适当的位置安装适当数量的滚轮。
In this paper, the relationship between the solidification time of SGA and its shear strength has been studied. On the other hand, solidification mechanism of SGA also has been studied by the IR.
本文研究了固化时间与粘接强度的关系，而且应用红外光谱研究了第二代丙烯酸酯胶的固化机理。
In this paper, the relationship between the solidification time of SGA and its shear strength has been studied. On the other hand, solidification mechanism of SGA also has been studied by the IR.
本文研究了固化时间与粘接强度的关系，而且应用红外光谱研究了第二代丙烯酸酯胶的固化机理。
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