查询词典 double-time

The pipe string includes double hydraulic cylinder with anchorage packer、double hydraulic cylinder without anchorage packer、releasing tool、reversing valve and centralizer.

该工艺管柱主要由双缸液压锚定封隔器、双缸液压无锚定封隔器、液压丢手工具、换层开关、扶正器等工具组成。

The pipe string includes double hydraulic cylinder with anchorage packer、double hydraulic cylinder without anchorage packer、releasing tool、reversing valve and centralizer.

胜利油田目前采用的常规换层采油管柱工作寿命短，且需多次起下管柱实现换层，施工程序复杂，作业成本高。

The double ends of central tube is penetrated into pipe union nut, chuck ring and seal ring in turn, and the central tube is penetrated into ladder-shaped public connection, push the seal ring and chuck ring of double end into the ladder-shaped public connection separately, the thrash pipe union nut is heave, is credible tight connection.

将中心管两端依次穿入由壬螺母、压环、密封圈，并将中心管穿入梯形公接头内，分别将两端的密封圈，压环推入梯形公接头内，锤击由壬螺母凸起，即可靠密封连接。

The double ends of central tube is penetrated into pipe union nut and seal ring in turn, and the central tube is penetrated into ladder-shaped public connection, push the seal ring and chuck ring of double end into the ladder-shaped public connection separately, the thrash pipe union nut is heave, is credible tight connection.

将中心管两端依次穿入由壬螺母、密封圈，并将中心管穿入梯形公接头内，分别将两端的密封圈，压环推入梯形公接头内，锤击由壬螺母凸起，即可靠密封连接。

In order to study the flow characteristics inside the double-channel impeller, a testing pump was designed and produced according to the special requirements for PIV measurement with two different impellers, i.e., the double-channel impeller and the two-blade impeller.

为研究双流道叶轮与普通叶片式叶轮的内部流动区别，设计制作了满足粒子图像测速仪测量要求的模型泵，模型泵的叶轮有双流道和双叶片2种形式。

According to the special requirements for centrifugal pump PIV measurement, a PIV testing platform was established to measure the instantaneous velocity in the double-channel pump with different impeller design, i.e., the double-channel impeller and the two-blade impeller, under different working conditions. The measured absolute velocity fields were transfered to relative velocity fields by specially developed code.

首次用PIV技术对设计工况与非设计工况下双流道叶轮及双叶片叶轮的内部流动分别进行了测量，并自编程序对测量得到的绝对速度场进行处理，得到相对速度分布。

The main drive system uses the main axle motor (FANUC, the 25/20HP), and coordinated with the German ZF the double section type gearbox, it can do transmissions directly by tooth-shaped belt, which is steady and more efficiency (surpasses 95%). The double section type gearbox expanded the ranges of the

主传动采用FANUC 25/20HP主轴马达，并配合德国ZF双段式齿轮箱直接通过齿形皮带传动，传动平稳，而且效率高（超过95%）。

The system provides 0.01μm positioning resolution with double way and double frequency laser interferometer, and uses micro feed tool post to compensate the error of 0.1-0.01μm.

结合超精密车床的实际情况，研制了专用的内嵌式可编程序控制器，具有很大的使用价值。

Deep groove bearings, double row self-aligning ball bearings, cylindrical roller bearings, double row self-aligning roller bearings, needle roller bearings, angular contact bearings, Tapered Roller Bearings , plane thrust ball bearings, outer spherical surface bearings, linear bearings, joint bearings, self-lubricating bearings, ceramic bearings, stainless steel bearings.

深沟轴承、双列调心球轴承，圆柱滚子轴承、双列调心滚子轴承、滚针轴承、角接触轴承、圆锥滚子轴承，平面推力球轴承、外球面轴承、直线轴承、关节轴承、自润滑轴承、陶瓷轴承、不锈钢轴承。

Deep groove bearings, double row self-aligning ball bearings, cylindrical roller bearings, double row self-aligning roller bearings, needle roller bearings, angular contact bearings , Tapered Roller Bearings, Plane Thrust Ball Bearings, outer spherical surface bearings, linear bearings, joint bearings, self-lubricating bearings, ceramic bearings, stainless steel bearings and other products, complete specifications, a wide variety.

深沟轴承、双列调心球轴承，圆柱滚子轴承、双列调心滚子轴承、滚针轴承、角接触轴承、圆锥滚子轴承，平面推力球轴承、外球面轴承、直线轴承、关节轴承、自润滑轴承、陶瓷轴承、不锈钢轴承等产品，规格齐全，品种繁多。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷