该系统包括给水泵控制、调节阀阀位控制以及安全保护和报警。
The system consists of feedwater pump control, adjusting valve level control, safety and alarm devices.
他们的水供给水质洁净、送达准时、相当安全。
They have a supply of water that is clean, predictably delivered and reasonably secure.
最后，详尽地论述了供应链中的循环库存和安全库存，并讨论了在既不降低供给水平同时又不增加成本的基础上，如何降低循环库存和安全库存。
Finally I study the cycle stocks and the safe stocks of the supply chain in details, and discuss how to reduce them in the preconditions of not lowering the supply level and increasing cost.
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