六、机械最有利的速度许多机件大都承受着传遞功率的力以及由於往复运动及振动所产生的惯性力。如[图十]是一种应用颇广的机构。假定传遞功率的力P在每一循环的前半个循环中为常值,而后半个循环为零。若用一適当的飞轮,则一循环中的速度可以认为很接近於常数。现在要研究一下水平的杆的载荷。在它上面的 Sixth, the most favorable speed of machinery Most of the mechanical parts are mostly subjected to the force of transmitting power and the inertial force due to reciprocating motion and vibration. Such as [Figure 10] is a widely applied body. It is assumed that the force P that transmits the power is a constant value in the first half of each cycle and zero in the second half of the cycle. With an appropriate flywheel, the speed in a cycle can be considered very close to constant. Now to study the horizontal rod load. Above it