单词accum-
网络: 累加器；积分；储料缸(accumulator)
29. This shows that a v accum, which is the absence of matter, cannot transmit sound.
29.这表示在真空环境中，因为没有介质，无法传播声音。
What is the way out? I bought an accum home, and decreased the frequency of mopping floor by water.
我买了个吸尘器，降低了用水洗地板的频率。
Inhibitory effect of ethanol on the evoked potential of neurons in nucleus accum bens in rats
酒精对大鼠伏核诱发电位的抑制