Students 'overweight load is not only embodied on the burden of lessons but also on the mental burden during the study.
学生负担过重不仅体现在课业负担方面，而且还体现在学习过程中沉重的心理负担方面。
The effects of mental load on HRV of pilots were analyzed with nonlinear dynamic analyzing methods .
结果表明，加载精神负荷后受试者的HRV的三个非线性参数都有不同程度的降低。
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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