此外还讨论了转向架回转阻力的定义和标准。
Furthermore, the definitions and standards of rotary resistance of bogies are discussed.
述结果对制订航空供氧装备附加呼吸阻力生理学标准具有实际意义。
The significance of our findings in deriving physiological standards for allowable resistance of aircraft oxygen system is discussed.
本文首先简单地介绍了深水阻力的两种比较方法即（1）直接比较法和（2）通过与标准船型的阻力性能比较。
The paper describes two methods of comparison of ship deep water resistance: (1) direct method of comparison and (2) comparison with "Standard Series" model resistance charts.
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