Objective To analyze the physical load characteristics of moulding workers by combining posture observation and surface electromyography(sEMG).

目的以姿势观察和表面肌电分析相结合，分析造型作业体力负荷暴露特征。

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The physical load can be adjusted by the adjustable resistance part.

体力负荷大小可通过可调阻力制动部分来调节。

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Flying career is such a kind of job that is very complicated and needs a high level of mental and physical load.

飞行工作是一项十分复杂的高负荷脑力—体力劳动，它对飞行人员的脑力工作能力要求较高。

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Physically demanding work was defined as work involving repetitive lifting, load-carrying or other significant physical exertion.

BBC: Heavy work 'bad for childbirth'

They invariably have several physical ports and are backed up by a second firewall that shares the load or comes online if the other one fails for some reason.

FORBES: Reduce Policy Complications to Enhance Security