这些技巧将以运动心理学的角度加以讨论。尤其是，预击流程、目标设定、放松、想像及正面的自我对谈。

These techniques are discussed in sports psychology, especially in "Preshot routine", "Targeting", "Relaxation", "Imagination", and "positive self-talking".

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子母叶片泵是广泛使用的高压泵，为了消除配流时的油击现象，在配流盘上设置了预升压闭死角及减振阻尼，这二者是影响泵的瞬时流量均匀性的主要因素。

The pre-loading process and silencing grooves were used on port plate in order to avoid the phenomenon of pressure pulsations, which are the main factors of flow ripple in pump.

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