Taking natural thermo-potential difference as natural draft pressure is ambiguous in theory and not in accord with the actual condition of mines.
把自然热位差当做自然风压在理论上是模糊的，是不符合矿井实际情况的。
It analyses the difference between static draft and dynamic draft of sounding transducer in water and the adjoint error.
本文系统地阐述了船体的纵滚、横滚和动态吃水对测深的影响，提出了一些有益的结论和建议。
It analyses the difference between static draft and dynamic draft of sounding transducer in water and the adjoint error.
本文系统地阐述了船体的纵滚、横滚和动态吃水对测深的影响，提出了一些有益的结论和建议。
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