分别在环境温度或振动应力单独作用下，各自优化出四个应力水平。
Four stresses levers are achieved through optimizing design under surrounding temperature or vibration stress alone affected.
结论CSS和CH单独作用均为肿瘤启动剂；当二者联合作用时可协同启动肿瘤的发生。
Conclusion Both CSS and CH may act as initiator in carcinogenesis, and may synergistically initiate tumors when CSS and CH were exposed simultaneously.
用浮置式细胞内微电极法引导在位灌流乌龟心脏心室肌细胞动作电位，观察高钾、高钙的单独作用及相互作用。
Using floating microelectrode, we have been able to record the action potential of ventricular cells of the tortoise and observed the effect of high potassium and high calcium on it.
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