The drivability study of piling requires modeling of the hammer impact to calculate the input force wave at the pile head.

桩的可打性研究需要模拟桩的锤击，计算出桩顶的应力波。

youdao

Rotor eccentricity in asynchronous motor always arose a series of low-order radial force wave and increase noise radiation.

异步电动机转子偏心会引起一系列低次数径向力波，并使噪声辐射增加。

youdao

Through the comparison of the different rotor slots number, the influence of the radial force wave of different rotor slots number is studied.

通过对几种不同槽配合的比较，研究不同转子槽数对径向力波的影响。

youdao

Metrics vary depending on the activity -- surfers, for example, will track the number of paddles, waves attempted and ridden, max g-force and the longest wave.

ENGADGET

Many in the utility industry worry that the most vulnerable part of the power system is its work force, as a wave of retirements is depleting the supply of linemen and other craftsmen who keep the lights on.

NPR: Young Workers Find Opportunity In Power Industry

It would be wrong to see a youth wave as a monolithic force for change.

BBC: Talking Pakistan politics in Cafe Bol