查询词典 double-stop

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。

SZG series double cone rotating vacuum drier's main machine is double cone tank, let steam or heat water inside sealed jacket heat the inner shell in vacuum state, the hot transferred from inner shell to dump material, make water of the dump material gasify, low speed motor drying the tank along, make material up and down, from inside to outside, and change the heated surface, at the same time, vapour is taken out continually through vent-pipe of vacuum pump, increase the speed of drying, attain the purpose of uniformity drying at last, it is in conformity with the requirement of GMP.

SZG双锥回转真空干燥机主机为双锥形罐体，罐内在真空状态下，夹套内可通过内胆传递给湿物料，使湿物料中水分气化，低速电机带动罐体回转，物料不断上下内外翻动，更换受热面，同时，水蒸气通过真空泵经真空排气管不断被抽走，加快了物料干燥速率，最终达到均匀干燥的目的。符合药品管理规范&GMP&的要求。

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。

Firstly, according to study dynamic changes of the elements structures in succession about natural and artificial forest, then summarized regular patterns;at the same time.based on the study of Coupling Relationship between structure and function of water conservation forest established the ideal structures from the stand level and the watershed level. The ideal structures from the stand level: uneven-aged, double layer and mixed structure, and trend to natural forest. The watershed level followed the same principle, that is double layer patches, uneven-aged forest well-distributed and to build up different forest patches in watershed.

首先，经过对北京山区水源林天然林和人工林结构要素的演替动态研究，提出其发展规律，同时依据水源林结构与功能耦合关系研究，从林分层次和流域层次上分别构建了水源林的理想结构，其中，林分层次上水源林的理想结构为：异龄、复层、混交的结构状态，林分结构趋于天然林结构的特征；在流域层次上水源林的理想结构为也应形成&复层&、&异龄&、&混交&的结构，即：在流域各水源林斑块间形成林冠层复层、斑块内部乔木、灌木、草本层的复层；不同水源林年龄面积上的均匀分布；形成不同水源林斑块间的镶嵌分布。

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。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。