通过对天然气在螺旋弯曲和正弦弯曲流道内的流动速度、密度和螺旋度进行研究，得到天然气对弯曲油管的作用力。
After studied the natural gas flow speed, density and helicity in the spiral and sine flow channel, the effects of natural gas to the bending tubing was obtained.
PWM整流器可实现正弦的网侧电流、单位或可调的功率因数、能量的双向流动，是一种真正意义上的“绿色环保”电力电子装置。
The PWM rectifier is a "green" power electronics equipment since it offers sinusoidal input currents, unity or adjustable power factor, reversal of power flow.
应用推荐