在训练前和训练后利用头高位倾斜检查立位耐力。
Their orthostatic tolerances were determined before and after training.
目的观察和比较头高位（HUT）与站立位（STD）对模拟失重所致股动脉收缩反应性降低的影响及其时间依赖性。
AIM To examine and compare influence and time dependence of head up tilt (HUT) or standing (STD) on decline of contraction responses of rat femoral artery caused by simulated weightlessness.
公司里只要有一个升迁的机会，大家便打破头的争取，而所谓的高位，也只不过是一个需要他们付出更多心血、时间、精力的位置而已。
People would scramble for an opportunity of promotion in a company. However, the so called higher position only means that they should spend more effort, time and energy in work.
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