Internal stops provide positive over travel protection for poweractuated valves and act as a reference to position the discs in the open and closed positions.
内置的止动装置为动力执行机构提供行程保护，并且作为参考坐标在开启和关闭位置定位阀瓣。
2
The pursuit of knowledge is, I think, mainly actuated by love of power. And so are all advances in scientific technique.
我认为对知识的追求也是出于对权力的迷恋，所有科学技术的改进也是源于此。
3
The pursuit of knowledge is, I think, mainly actuated by love of power. And so are all advances in scientific technique.