预拉 meaning in English
preliminary drawing
prestretching
pretensioning
Examples
- Preassembled parallel wire strands, in contrast to structural strands, do not require prestretching .
预先装配的平行钢丝索与结构钢缆相比，不需要预拉。 - Steel reinforcement bar pre - drawn platform
钢筋预拉台 - For reducing the disadvantageous influence of the the relaxation of strain and the lose of pretension on the structure , the time span of delaying scene torsional moment checx and accurate maintence method are given
为减少高强螺栓预拉应变松弛和预拉应力损失对结构的不利影响，给出了延迟现场扭矩检测的时间区间和正确维护的方法。 - These can make up the shortcoming of slrcp ; 2 3 . to study the steel stress development of penstock , ring - form slsfsrcp and horse - shoe slsfsrcp during curing period are monitored . the pre - tension stress due to expansion of self - stressing concrete can be used in design ; 4
对圆形和马蹄形管道进行了28天养护期内力监测，研究了钢衬钢筋钢纤维自应力混凝土压力管道的自应力成长过程，明确了钢筋的预拉应力数值，为此类改性管道设计直接提供依据； 4 - The third chapter introduced the experiment of thermal pre - elongated taper on the pof . through experiment repeatedly , the paper proposed the good parameter of plastic optical fiber thermal pre - elongated taper , and give some test and analysis on the thermal pre - elongated taper plastic optical fiber
本论文第三章对塑料光纤热预拉锥的实验进行了介绍。通过反复实验,本论文提出较好的塑料光纤热预拉锥相关工艺参数,并对拉锥后的塑料光纤进行相关的测试分析。