无滑动、摩擦、转动部件，可降低能量损失。
No sliding, friction, rotating components, can reduce the energy loss.
如果不能延长注汽时间，则可以通过适当地增大单位时间的注汽量来降低能量损失。
If it is impossible to extend the time of steam injecting, the energy loss can be lessened by increasing the quantity of steam injected into well in per unit o...
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