目的：观察血小板衍生生长因子-BB (PDGF - BB)对大鼠主动脉血管环的收缩作用。
AIM: to investigate the effects of platelet-derived growth factor BB (PDGF-BB) on vasoconstriction of the vascular vessels.
太平洋的收缩引起板块向其他板块挤推，造成了剧烈的地震和快速的造山运动，尤其是沿著“火环”的地区。
Compression of the Pacific caused plates to be pushed under others which caused violent Earthquakes and rapid mountain building particularly along regions of the Ring of Fire.
他的目光越过哈尔茜博士投向中间的裂缝。环在这里更快的变平。岩壁只有八分之一米高而且更明显的收缩着。
He looked past Dr. Halsey to the central rift. The rings here were flattening fastest. The ledges were only an eighth of a meter high and visibly contracting.
环氧化合物改性后脱细胞真皮基质的拉伸强度大幅度提高，收缩温度也相应提高。
And the acellular dermal matrix modified by epoxy compound is improved a lot in tensile strength and a certain increase in shrinkage temperature.
目的探讨二尖瓣环收缩期峰值速度及收缩期位移评价扩张型心肌病患者左室收缩功能的价值。
Objective To probe the value of mitral annulus peak systolic flow velocity and systolic displacement in evaluating left ventricular systolic function of dilated cardiomyopathy patients.
盘簧与两个密封环的组合，可防止因加热或冷却产生的膨胀和收缩，由此确保阀门即使使用多年后仍运行可靠。
This combination of disc springs and dual valve seal rings protects against expansion and contraction due to heating and cooling. This ensures dependable operation, even after years of service.
但在成形过程中，壳体赤道环焊缝处极易向内收缩，从而引发该处的失稳起皱，严重影响了球形容器的质量。
But in the forming process, equator of the shell tends to withdraw inwards and therefore creates wrinkles here, which badly affects the quality of the vessel.
目的：研究溶血磷脂酰胆碱（LPC）对狗脑基底动脉环收缩的影响及舒络的保护作用。
Objective: To investigate the effects of LPC on contractile responsiveness of dog basilar artery and the protection of Shuluo.
介绍了聚环氧丙烷类高抗收缩剂的收缩机理和制备方法，并且对其进行了抗压强度及抗拉强度的性能测试。
The reaction mechanism, method of synthesis and property testing of polyoxypropylene series compounds as shrinkage reducing agents in cement concrete are introduced in this paper.
结论：测量二尖瓣环下行速度可作为一个评价左室收缩功能的新指标。
Conclusion: the mitral annular descent velocity can be used as a new index to evaluate the LV systolic function in mi.
结果大黄素对苯肾上腺素和氯化钾预收缩的内皮完整和去内皮血管环具有浓度依赖性的舒张作用。
ResultsEmodin relaxed the phenylephrine and potasium chlorate induced contraction of aortic rings, either with or without intact endothelium , in a concentration-dependent manner.
在上述基础上提出的环墙侧压力、环拉力和温度收缩应力的计算公式，可供工程设计中采用。
On this base, the formula used for calculating the side pressure of ring wall, ring tensile and temperature contraction stress is established for engineering design.
各种药物对血管环的作用强度用最大舒张率表示，即加药后收缩幅度与加药前收缩幅度的百分比。
The intensity of effects of all drugs on vascular ring was presented by the maximum diastolic rate, i. e. the percentage of contracted extent after and before administration.
蜂毒肽对去内皮主动脉环由苯肾上腺素引起的收缩无作用；
In endothelium-denuded aorta rings, melittin did not have the effect on the contractile responses induced by PHE.
用离体血管环技术观察肺动脉环收缩张力的变化。
The tension changes of pulmonary artery were monitored in vitro.
本文对MFE环氧乙烯基酯(含mfe型和afe型二种型号)树脂的固化性能(凝胶时间、放热峰和固化收缩率)作了报道并进行讨论。
The curing characteristics such as gel time, heat Peak and curing shrinkage rate of MFE epoxy vinyl ester resin (MFE type and AFE type) are discussed in this paper.
新型预制钢筋混凝土梁柱抗震节点采用五环螺旋箍、一笔箍和在套筒中灌注无收缩高强砂浆的方法制作。
The method of 5-ring screw hoop, 1-pen hoop and non-shrinkage high-strength mortar poured into sleeve is used at the seismic joint of new-type prefabricated reinforced concrete beam-column.
新型预制钢筋混凝土梁柱抗震节点采用五环螺旋箍、一笔箍和在套筒中灌注无收缩高强砂浆的方法制作。
The method of 5-ring screw hoop, 1-pen hoop and non-shrinkage high-strength mortar poured into sleeve is used at the seismic joint of new-type prefabricated reinforced concrete beam-column.
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