根据我国航道条件就现有浅水拖输艏艉线型形状进行了探讨，从阻力和推进观点出发对满载水线、横剖面形状、半进水角和各种坠洞以及它们对螺旋桨的影响等加以分析、比较。
In view of the resistance and propulsion, the load water line, shape of sections, half Angle of entrance, forms of tunnel and their effect on propeller were analysed and compared.
对游泳技能有贡献的特质被命名为“生物力学”，因为它们涉及到身体在水中移动的阻力和有效利用肌肉力量推进这些因素。
"The qualities that contribute to swimming skill are termed" biomechanical "because they involve factors responsible for resistance of the body's movement through water e." g.
对游泳技能有贡献的特质被命名为“生物力学”，因为它们涉及到身体在水中移动的阻力和有效利用肌肉力量推进这些因素。
"The qualities that contribute to swimming skill are termed" biomechanical "because they involve factors responsible for resistance of the body's movement through water e." g.
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