It seems likely, then, that the traditional three-stage life will evolve into multiple stages containing two, three, or even more different careers.
那么，传统的三段式生活很可能演变成包含两个、三个甚至更多不同职业的多阶段生活。
2
It is comprised of multiplestage centrifugal pump, double stage gas separator, protector, submersible motor, guard shield and setting gas separator.
它主要由多级离心泵、双级分离器、保护器、潜油电机、护罩、沉降分离器组成。
3
This article studies the six-degree-of-freedom trajectory simulation of small multiplestage solid launch vehicles with control systems using lateral jet thrusters and grid fins.