你会用网球式发球法吗？
评价法，将我国优秀男排队比赛中的发球、扣球、拦网等技术，与世界男排强队进行比较。
P assessment, the authors compare the techniques serving, spiking, blocking and so on of China's top volleyball teams in competitions with that of the powerful men teams in the world.
采用实验法，探索运动员在趋避动机冲突情境中发球决策的非理性。
The method of experimental research was used to probed into players irrationality of service decision made in the situation of approach-avoidance motive conflict.
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