查询词典 moment of force

Finally, the thesis analyses the time-state curve of the axial force and bending moment of the steel framework and the axial force of the anchor bolt.

同时，采用隧道围岩和支护相互作用的粘弹性理论解，探讨了锚喷支护隧道围岩与支护的应力和位移随时间变化规律。

Therefore, the torque required to open the gate valve required torque than the closure of large, in addition, for a pair of contact between the sealing surface, the Non Rising Stem Resilient Seated Gate Valves coefficient of static friction between them than the dynamic friction coefficient, to make them from the static state generate the relative movement is required to exert greater force to overcome the static friction; due to temperature changes, so that the sealing surface pressure between the larger, need to overcome the static friction force also will be bigger, so that when you open the valve on the stem nut on the sometimes increase the torque exerted a lot.

所以，开启闸阀所需的力矩比关闭闸阀所需的力矩大，此外，对于一对互相接触的密封面来说，它们之间的静摩擦系数也比动摩擦系数大，要使它们从静止状态产生相对运动，需施加较大的力以克服静摩擦力；由于温度变化，使密封面间的压力变大，需要克服的静摩擦力也随之变大，从而使开启闸阀时，对阀杆螺母上施加的力矩有时会增大很多。" Moment analysis of valve operation "是由中国闸阀网提供的国际阀门新闻，译文仅供参考。另外，中国闸阀网还提供相关产品搜索：闸阀型号、闸阀价格、闸阀技术、闸阀新闻、闸阀生产商等。

Aiming at bottom roof caving and support impact problems induced with abrupt large scale caving upper roof in face 21303 of Daliuta mine, this paper put forward the motion parameter at roof caving and calculation formula of roof shear breaking force with the help of theorem of momentum, theorem of moment of momentum and D' Alembert principle. Roof caving process was simulated by Ansys Ls-DYNA program, and maxim impact force was got. The theoretical research outcomes in the paper were applied in face 21303 of Daliuta mine, and were accordant with actual observing status of roof caving process.

针对神东煤炭公司大柳塔煤矿活井21303综采工作面，上层采空区顶板突然大规模垮落对下层顶板及支架的突然冲击问题，文章采用动量定理、动量矩定理、达朗伯原理推出了顶板垮落瞬间的运动量及顶板切顶垮落所需要的剪力值计算公式，用ANSYS LS-DYNA程序对顶板垮落过程进行了数值计算，得到了最大冲击力，在大柳塔煤矿活井21303综采工作面对顶板垮落特征进行了实际观测和理论成果验证。

The electromagnetic force magnitude and distribution with different deformation in electromagnetic bulging with die are analyzed and the moment of maximal electromagnetic force is researched.

在成形过程中，载荷是以脉冲的方式作用于坯料的，故又称之为磁脉冲成形或冲击加工[3]。

In this paper, we put forward a new kind of mechanism based on the analysis of the movement regularity of traditional horizontal reciprocating compressor which combined both magnetic suspension technique and linear driving technique. It takes advantage of the magnetic field force acted on the plunger, which will generates moment of couple to balance the corresponding moment ...

分析了传统卧式往复压缩机活塞连杆运动的规律，设计了一种集磁悬浮和线性驱动技术为一体的往复磁悬浮式压缩机机构，该机构利用作用于活塞连杆上的磁场力，使其力偶矩与连杆活塞的重力矩相平衡，使活塞对缸体的正压力趋向于零或等于零的理想状态，从而使摩擦副间的摩擦力达到最小。

The two molecules of the permanent electric dipole moment and induced electric dipole moment of the interaction, called induced force.

这两个分子间的永久电偶极矩和诱导电偶极矩的相互作用，称为诱导力。

The clip force was calculated according to the regression equation of arm of force and moment.

简易测量方法可得到与根据力矩测算的夹持力接近的准确结果。

When the resistive moment of surrounding soil is less than the torsional moment of eccentric jacking force, stability failure of pipeline occurs and pipes deviates from the designed axes.

管道失稳是由于管道周围土体提供的抵抗力矩小于偏心顶推力而产生的扭转力矩，造成管节偏离设计轴线。

For the variation curves of the shear force, bending moment and torsional moment of the wing along the lines of span , the variation trends of rigid and elastic proportions are the same as result 1

机翼剪力、弯矩和扭矩随翼展变化的曲线中，也同样是刚体部分所占的比例不断减小，弹性部分所占的比例不断增加

For the variation curves of the shear force, bending moment and torsional moment of the wing along the lines of span , the rigid proportions decrease while the elastic one increases

机翼剪力、弯矩和扭矩随翼展变化的曲线中，刚体部分所占的比例不断减小，弹性部分所占的比例不断增加

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。