It is verified by means of model test that the ship vibration is caused by the propeller-excited force, which is generated by the propeller running in the non-uniform stern flow field.
并通过模型试验进一步证实该船振动的成因主要是由于螺旋桨在不均匀流场中运转时产生的激振力所致。
An expression of energy difference rate in a plate of non-uniform thickness with a crack of mixed mode under both body force and surface tractions in a non-uniform temperature field is derived.
本文推导出了含复合型裂纹的变厚度板在承受体力和面力、存在非均匀温度场的情况下的能量差率表达式。
Using the slider to drive a metal bar to cut perpendicularly the uniform magnetic field in the center of a Helmholtz coil, induction electromotive force could be produced.
利用滑块带动金属杆切割亥姆霍兹线圈中心区域匀强磁场的磁感应线，可以产生感应电动势。
The formulae of magnetic moment of a space coil and moment of magnetic force acted on a coil in a uniform magnetic field are presented.
文中导出了任意形状的空间载流线圈磁矩的计算公式及其在均匀磁场中所受磁力矩的计算公式，结果表明本文的结论与电磁学理论的有关知识是相合的。
The preparation method leads the stirring force field and the temperature field of the slurry to be more uniform, thereby obtaining the high-quality semi-solid slurry.
这种制备方法将使浆料受到的搅拌力场和温度场更加均匀，从而得到优质的半固态浆料。
The research results show:in addition to a slightly divergent appear due to the sheet edge effects of the electromagnetic force, the magnetic field intensity is uniform in the most areas of the sheet.
研究结果表明：除了板坯端部由于端部效应电磁力有些许发散，在板坯大部分区域，磁场力呈均匀分布。
The research results show:in addition to a slightly divergent appear due to the sheet edge effects of the electromagnetic force, the magnetic field intensity is uniform in the most areas of the sheet.
研究结果表明：除了板坯端部由于端部效应电磁力有些许发散，在板坯大部分区域，磁场力呈均匀分布。
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