伯努利原理
According to Bernoulli equation and the principle of balance of force, the weight of spherical valve core for pulp check valve and the raising height of the valve core was designed and calculated, the structure characteristic of the check valve was analyzed.
依据伯努利方程和力的平衡原理,设计计算了矿浆止回阀球形阀瓣的质量和抬起高度等参数,分析了该止回阀的结构特点。
Based on the Bernoulli's principle, stress-strain relationship of materials and the conditions of equilibrium, the formulae calculating cracking moments are derived.
根据平截面假定、材料应力应变关系和静力平衡条件导出混凝土受弯构件正截面抗裂弯矩计算公式。
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