掺入的三叶形聚丙烯单丝纤维长度越长，水泥砂浆的抗干缩开裂性越好；
The longer the length of trefoil polypropylene filament fiber, the better the anti-dry-shrinkage cracking property of cement mortar.
本文给出了U型钢可缩性支架的缩动条件，讨论了卡缆预紧力对支架抗缩动能力的影响以及支架在缩动过程中抗缩动能力的变化等问题。
The paper gives yielding conditions and discusses the influence of pre-tension of clamps on yieldable capacity of the U-steel and change of yieldable capacity in the process of yielding.
提示MT可以通过抑制ET的释放和拮抗ET的缩血管效应，发挥其内源性抗损伤物质的作用。
Tihe resulis suggest that MT could exert its injury-resistant action, as an endogenous defensive substance through inhibition of ET release and anlagonization against ET-induced vasocontraction.
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