There is a range of applied force over which the regression rate remains constant.
施加的力有一个范围，在这个范围内递减率保持不变。
It is found that the main effect of self steepening is the reduction of the growth rate and the frequency range over which the gain occurs.
发现自变陡效应使增益谱的谱宽变窄、振幅的增长速度减慢，而且其影响程度与色散缓变参量有关。
Results: With the addition and amount of PVP into the gels, the stickiness of gels was increased and the drug releasing rates were controlled over a suitable rate range.
结果：发现凝胶剂中加入适量PVP既可增加凝胶的粘结力，又可在一定范围内控制释药速率。
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