在最大负载和高频率操作状态下，内部测试显示执行机构的使用寿命增加了两倍多。
In-house test have shown that the life span of the Actuator was increased by more than two-fold when operating under max. load and high cycles.
最近几年，专业机构的受伤比例增加，其中一半以上是由于搬运及弯腰操作为当。
The rate of injuries in occupational settings has increased in recent years, and more than one half are back injuries resulting from improper lifting and bending techniques (Owen and Garg, 1991).
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