加法制造的过程中需要的原材料更少，因为3d印制机制由软件驱动，它可以制作所需的不同部件，而不用对每个不同部件进行耗材耗时的更换机械设备。
The additive process requires less raw material and, because software drives 3d printers, each item can be made differently without costly retooling.
分别计算了三种抗剪机制承担剪力的大小，由叠加法和杠杆法分别确定最终受剪、受弯承载力。
The shear of each model is calculated separately and superimposed to establish the shear bearing formula. The formula of bend is established by lever principle.
分别计算了三种抗剪机制承担剪力的大小，由叠加法和杠杆法分别确定最终受剪、受弯承载力。
The shear of each model is calculated separately and superimposed to establish the shear bearing formula. The formula of bend is established by lever principle.
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