他认为，神经用得愈频繁就愈易振动，因而人的记忆力就愈好。
The more often nerves were used, the more easily he thought they vibrated, and the better memory would then be.
对试车中遇到的干气密封频繁损坏、轴振动、泵输出量逐渐下降等原因进行了系统分析。
A systematic analysis is made of the causes for the frequent damage of dry-gas seals, axle vibration and gradual decrease in pump delivery encountered during the test run.
随着轧机速度的提高，轧机振动现象频繁出现。
With the increasement of rolling speed, rolling mill vibration problems happen very often.
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