The reason why crankshaft must be equipped the equivalent ring at the crankpin when the dynamical equilibrium test is made is pointed out.
阐述了发动机曲轴动平衡试验时在曲柄销上需加装当量质量的原因，并提出了在曲轴动平衡试验时当量质量的计算方法。
The concept "equivalent ring" simplifies the array model in the method of equating arrays with unequal elements to arrays with the same elements in each ring.
文中提出了“等效环”的概念，把旋转对称面上不等元分布共形阵等效为等元分布的情形，简化了共形阵的物理模型。
I stopped to look at Mosh Shternberg’s silver work and bought a spiral-shaped ring that wraps around my ring finger, for the equivalent then of about $37.
我在摩西 希腾堡银器店停下脚步，买了一只螺旋状的戒指戴在无名指上，这只戒指的价值相当于37美元。
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