记忆方法
1、puls- "beat, strike" + -ation.
英语词源
- pulsation (n.)
- early 15c., from Middle French pulsation (14c.) and directly from Latin pulsationem (nominative pulsatio) "a beating or striking," noun of action from past participle stem of pulsare "to beat, strike, push against' hammer, keep hitting," figuratively "drive forth, disturb, disquiet," frequentative of pellere (past participle pulsus) "to beat, strike" (see pulse (n.1)).
权威例句
- 1. At low frequencies, such as 10 per sec., pulsation is sensed rather than vibration.
- 在低频率(譬如每秒十次)时, 所感觉到的是脉冲而非振动.
- 2. If the roller pulsation, the pressure on paper as cause misregister.
- 如果滚子径向跳不静, 则差纸的不张辛有不小有小,致使套印禁绝.
- 3. Vortexing can cause unstable pump operation, vibration, pulsation and severe mechanical damage.
- 涡流可能会导致泵运行不稳定 、 振动 、 跳动和严重的机械破坏.
- 4. Service in systems involving frequent flow reversals and pulsation should be avoided.
- 应该避免应用在频繁出现流体倒流和间断的应用系统中.
- 5. A pulsation of the heart ; a heartbeat.
- 心动描记器上标明心跳次数.
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