Working conditions of plunger in water hydraulic plunger pump is quite adverse, and its material needs rather high requirements on strength and wearability.

水液压柱塞泵的柱塞工况非常恶劣，对材料的强度和耐磨性都有较高要求。

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The requirements of slewing drive used in truck crane is rather high, it should have significant security and reliability.

随车起重机对回转式减速器的要求性能很高，要求产品具有严格的安全性和可靠性。

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The functional requirements on surface layer of foundation bed for high-speed rail-ways are rather more strict than for ordinary railways.

和常规铁路相比，高速铁路对基床表层功能的要求更加严格。

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Such plans may be more likely to run afoul of the law's requirements that insurers spend a high portion of premiums on medical care rather than administrative expenses.

WSJ: Firms Fret Over Health Care