A ultra performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS) method was developed for determination of altrenogest and chlormadinone in swellfish.
研制出了测定河豚中烯丙孕素和氯地孕酮的超高效液相色谱-串联质谱检测方法。
The precondition of the acceleration testing method is the determination of the train resistance, rotary mass coefficient and train mass. The crucial test is measurement of train acceleration.
加速度测试法的先决条件是确定列车基本阻力、回转质量系数和列车质量，而其测试关键是列车加速度的测定。
A method for determination of the optimum mass ratio was proposed on the basis of analyzing the dynamic parameters of double mass vibrating system and their relationship.
通过对双质量振动系统的动力学参数及其相互关系的分析，提出了最佳质量比的确定方法。
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