Under these conditions, flapping, birdlike flight might well have some benefits over propeller-driven or helicopter flight.
在这种情况下，拍击，像鸟儿一样飞可能比螺旋桨推进飞行要好些。
It sets forth the computing method of rotor moment of inertia of the propeller and engine as well as the computing method of additional moment or angular velocity produced by precession.
阐述了螺旋桨和发动机转子转动惯量的计算方法，由进动产生的附加力矩或角速度的计算方法。
According to mechanism of low frequency broadband noise of the propeller, theoretical analysis method is given and numerical calculation of the noise is carried out as well.
在分析螺旋桨低频宽带噪声成因的基础上得到了理论计算方法，并作了数值计算。
According to mechanism of low-frequency broadband noise of the propeller, theoretical analysis method is given and numerical calculation of the noise is worked out as well.
在分析螺旋桨低频宽带噪声成因的基础上得到了理论计算方法，并作了数值计算。
As for a propeller of a tugboat, it is necessary to calculate the fatigue strength in the self running state as well as the static strength in the bollard state.
对拖船螺旋桨来说，除了应计算系桩状态的静态强度外，还应计算自由航行状态的疲劳强度。
To some extent, clearance between hull and propeller gives some effect on SBF as well.
螺旋桨与船体的间隙对固壁因子也产生一定的影响。
The mechanism and real significance of the blade shape modification technology of propeller, as well as the calculation method and technical process for blade edge cutting are briefly introduced.
本文概括地说明了螺旋桨修边技术的机理和现实意义，介绍了有关的计算方法，以及切割的工艺过程。
ZTU series of Turbine Propeller are used as cycle stirring devices for lying pulp chest in paper making industry to keep fiber in suspension and also well-distributed.
ZTU系列涡轮式推进器用于制浆造纸工业作为卧式浆池的循环搅拌装置。以使纤维保持悬浮状态，保证纸浆的组成部分在浆料中均匀分布。
ZTJ series of Screw Propeller are used as cycle stirring devices for lying pulp and paper making industry to keep fiber in suspension and also well-distributed.
ZT J系列螺旋桨是推进器用于制浆造纸工业作为卧式浆池的循环搅拌装置。以使纤维保持悬浮状态，保持纸浆的组成部分在浆料中均匀分布。
ZTJ series of Screw Propeller are used as cycle stirring devices for lying pulp and paper making industry to keep fiber in suspension and also well-distributed.
ZT J系列螺旋桨是推进器用于制浆造纸工业作为卧式浆池的循环搅拌装置。以使纤维保持悬浮状态，保持纸浆的组成部分在浆料中均匀分布。
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