不完善的机械化往往不能减轻体力劳动强度。例如,大连电机厂铸造车间在 Z145(苏联型号271)造型机上,靠人力抬箱,工人要赶上机器的节拍,因此,非常吃力。一般工人在一个班的前两个小时能坚持正常生产,时间长了坚持不住,效率就降低了。有的人说:“人变成了机器的奴隶”。这种机械化是不受工人欢迎的。有一个造型工曾经建议改善 Z 145造型机的劳动条件,由于他的启发,并在工厂有 Imperfect mechanization often can not reduce physical labor intensity. For example, the casting shop in Dalian Electrical Machinery Factory used the Z145 (Soviet model 271) molding machine to lift the boxes by force, so the workers had to catch up with the beat of the machine, so it was very laborious. The average worker can stick to normal production in the first two hours of a class, and can not keep up for a long time and the efficiency is reduced. Some people say: “People become slaves to the machine.” This mechanization is unwelcome to workers. There was a stylist who had suggested improving the working conditions of the Z 145 Molding Machine because of his inspiration and at the factory