Theoretically the sum of the velocities of the three pistons on the discharge stroke in a low-fluctuation triplex pump should be a constant, and this can be achieved by means of the cam mechanism.
对于三缸低波动往复泵，理论上应使三个活塞在排出行程（吸入行程）中的速度之和为一常数，采用凸轮机构能达到这一目的。
Urinary incontinence can affect 40-60% of people admitted to hospital after a stroke, with 25% still having problems on hospital discharge and 15% remaining incontinent at one year.
40%—60%因中风住院的病患受尿失禁所困扰，25%的病患出院时还是依然面临相同的窘境；15%的病患甚至在出院一年后还是有尿失禁。
Methods The QOL of stroke patients was measured with Shot Form 36 Health Survey Questionnaire(SF-36) and questionnaire survey before discharge and six months after discharge;
方法应用健康调查简表（SF-36）于出院前和出院后6个月对脑卒中患者的生存质量进行测量并做问卷调查；
Methods The QOL of stroke patients was measured with Shot Form 36 Health Survey Questionnaire(SF-36) and questionnaire survey before discharge and six months after discharge;
方法应用健康调查简表（SF-36）于出院前和出院后6个月对脑卒中患者的生存质量进行测量并做问卷调查；
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