扭矩

First to 50% tabulated values, then re-torque to 100% of tabulated values.

一开始先用50%的表格扭矩值，然后再用100%表格扭矩值。

If greater torque is required, continue re-torque in increments of 50% of tabulated values.

如果需要更大的扭矩，则可以50%表格扭矩值增量继续紧固。

First to 50% tabulated values, then re-torque to 100% of tabulated values.

首先按照表格中的扭矩值的50%加以紧固，然后再按照表格扭矩值的100%进行紧固。

It is advisable that live-loaded bonnets be checked for bolt torque at operating pressure, no future tightening of gasket bolting will be necessary, unless the valve has been dismantled, in which case, the gasket bolts must be torqued to appropriate values and bolt tightness rechecked after operating test pressure and temperature has been achieved.

可以在工作压力下检查动负载阀帽的螺栓扭矩，除非阀门被拆卸，否则不需要对垫圈螺栓进行紧固。在这种情况下，垫圈螺栓扭矩必须保持适当，在达到工作试验压力和温度后，应该重新检查螺栓的紧固性。

"Under certain conditions, hydrodynamic torque can meet or exceed seating and un seating torques."

在某些条件下，水动力扭矩可能达到或超过阀座和非阀座扭矩。

"Under certain conditions, hydrodynamic torque can meet or exceed seating and unseating torques."

在某些条件下，水动力扭矩可能达到或超过阀座和非阀座扭矩。

SUMMARY A more accurate steady drillstring tension-torque model has been established by taking into account of drillstring, wellbore condition , drilling operation and drilling parameters. This model has been used in scientific calculations of directional and horizontal wells, such as determing the friction factor between wellbore and drillstring, calculating the hook load and rotating torque, ckecking the strength and stability of drillstring, optimizing well trajectory, computing the WOB while drilling by downhole motor and predioting the maxinum allowable length of horizontal section.

综合考虑钻柱、井眼环境、作业过程和作业参数的影响，建立了更完善的钻柱稳态拉力和扭矩模型，并将其应用于确定钻柱与井壁的摩擦系数、计算大钩负荷和转盘扭矩、校核钻柱的强度和稳定性、优选井眼剖面、推算井下动力钻进的实际钻压和预测水平井段的最大可钻长度等定向水平井的科学计算中。

Compared with the numerical model, the analytical model is more propitious to studying relationship between process parameters and surface geometrical error.

通过研究这些因素，基于铣削力/铣削扭矩和瞬时未变形切屑厚度的关系，建立了一个考虑了铣削力/铣削扭矩的解析模型，用来预报在端铣情况下工件的表面几何误差。

By analyzing the characteristic of the straitening process of the concentrative drive straightener, the coupling between the shafts is studies and the traditional method of calculating the transmission torque is improved.

通过分析集中驱动式矫直机矫直过程的特点，研究矫直机工作辊扭矩之间的耦合关系，改进了集中驱动的辊式矫直机传动扭矩的计算方法。

"Under certain conditions, hydrodynamic torque can meet or exceed seating and unseating torque s."

在某些条件下，水动力扭矩可能达到或超过阀座和非阀座扭矩。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐