减压区总成必须按照当地有关规定定期检查和测试，以确保这种装置内的止回阀能够正常运行。

Reduced Pressure Zone Assemblies must be inspected and tested periodically, in accordance with local codes, to ensure proper operation of check valves within the unit.

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假设药品费用下降5%，治疗费用、检查费用、住院费用、时间费用各增长1%，总成本发生的相应变化。

Supposing that cost of medications decreased by 5%, cost of treatment, examination, hospitalization and time increased by 1% respectively, total cost would change accordingly.

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假设药品费用下降5%，治疗费用、检查费用、住院费用、时间费用各增长1%，总成本发生的相应变化。

Supposing that cost of medications decreased by 5%, cost of treatment, examination, hospitalization and time increased by 1% respectively, total cost would change accordingly.

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