Plastics piping systems - elastomeric sealing ring type joints and mechanical joints for thermoplastics pressure piping - test method for leaktightness under external hydrostatic pressure 塑料管道系统.热塑塑料压力管道用的弹性密封环型接头和机械接头.外部流体静压条件下防漏密封试验方法
In general , unique maple varieties are being propagated by vegetative fashion , i . e , cutting , grafting , or air layering . in the us , 99 % of the maple varieties are produced by grafting 蛮子译:总之独特的枫树品种是由植物生长的方式来繁殖的,也就是插枝,嫁接,或压条法.在美国99 %的枫树品种是由嫁接产生的
For imcompressible , the singularity is comparatively weak bacause the velocity is divergence free that the mechanism to construct control function is much more difficult than those numerical examples we mentioned before 对于不可压流体，由于速度场满足不可压条件，所以奇异性相对较小，要构造控制函数比较困难。
The results show rotor - stator interaction causes unsteady flow in design state , and the rotor - stator interaction in off - design state is weak , the unsteady phenomena is not obvious in off - design state 结果表明，在设计状态动静干涉作用是导致非定常现象产生的主要原因；在高背压条件下动静干涉作用很弱，导致非定常现象不明显。
In this thesis , the chemical kinetic models with higher active energy enhanced by overpressure factors could be used for modeling the organic matter maturation and diagenetic history of the overpressured formation 本文通过在成岩反应的化学动力学模型中加入超压因子增加反应活化能，建立了超压条件下成岩作用的数值模拟系统。
The flow of turbine in design and off - design state was simulated by the method of numerical simulation of 3 - d viscous flow , and the flow mechanism in design and off - design state was studed 主要利用三维粘性非定常数值模拟的方法对设计状态和高背压条件下透平叶片内部的流动进行模拟，并分析了设计状态和高背压条件下非定常流动机理。
S . fredii can synthesize phb in culture medium of glucose and change its metabolic pathway by intimidation pressure when alkanoates were added int o culture medium . according to this theory , metabolic pathway of p ( hb - hh ) was induced 根据费氏中华根瘤菌在以葡萄糖为碳源时合成phb ，而在烷酸盐提供一定环境胁迫压条件下，改变了代谢方向，我们推导出该菌合成phas的代谢途径。
Fast charging with a high current supply should not be attempted on a deeply discharged battery ? the battery would draw excessive current , pull the vdd voltage down , and possibly cause a handset malfunction or shutdown due to an under - voltage lockout condition 不要尝试用大电流给一块完全没有电的电池快速充电，电池能够吸取过量电流，拉低vdd的电压，使手机处于欠压条件下，可能造成手机故障或关机。
Nonce , the system of diagenetic numerical modeling for the stratum under the conditions of normal pressure has been set up . in lots of sags rich of petroleum in the basins of eastern china , such as qibei sag of bohaiwan basin , there are plenty of deep - buried overpressure reservoir 但在中国东部许多盆地的富油气凹陷，如渤海湾盆地歧北凹陷，油气藏分布在深层超压地层中，超压条件下成岩作用的数值模拟尚不完善，更不用说孔隙度预测了。
This thesis introduced the basic theory of element - free method , and how to trace the crack propagation of rock mass , then simulated the crack propagation of test sample without outside hydraulic pressure , and compared the calculated result with the fact status 本文介绍了无单元计算方法基本原理及如何应用无单元法对岩体裂纹扩展进行计算追踪，然后应用无单元法模拟试件在无围压条件下水力劈裂裂纹扩展的过程，并与实际情况作了对比分析。
