Method: by adopting grouping and comparison methods, to compare pain degree of patients accepted HCG intramuscular injection taking either normal saline or water for injection as dissolvent.
采用分组对照法，比较生理盐水和注射用水作为绒毛膜促性腺激素溶媒肌肉注射时的疼痛程度。
Method: The test was performed by grouping antitheses.
方法：采用分组对照的方式进行试验。
By combining the continuous power flow method with improved differential evolution calculation, the static voltage stability margin is found via optimal grouping of relevant variables.
在连续潮流法的基础上，结合经过改进的差异进化算法，通过对变量的组合优化，求取系统静态电压稳定安全裕度。
Drugs also can be classified according to their form, such as liquid, tablet, ointment, or powder. Still another method of grouping drugs is by their chemical structures.
药物还可根据其外形分类，如水剂、药片，药膏和粉剂。还有一种方法是按照其化学结构分类。
Needless eigenray tracing, the ray grouping method calculates average field matrix by grouping the emitted rays, then .
为此提出一种基于声线理论计算平均声场的快速算法—声线分组法。
Simulation result shows that this method can solve grouping problems of terrain segmentation by traditional methods.
模拟结果表明，该方法能够解决传统方法在地形分割中的分群错误问题。
Simulation result shows that this method can solve grouping problems of terrain segmentation by traditional methods.
模拟结果表明，该方法能够解决传统方法在地形分割中的分群错误问题。
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