weakening (reducing the concentration) by the addition of water or a thinner
例句
用作名词 (n.)
Cardiac output was measured by thermo dilution. 用热稀释法测定心输出量。
There is no hard and fast rule about dilution. 至于稀释程度，没有严格的规定。
In the east,the water is mainly oceanic with relatively minor dilution from direct monsoonal rainfall and runoff from small streams. 东部水域主要为海水，而直接的季候雨及小溪溢流，把海水稍为冲淡。
经典引文
This eelworm-killer is effective at a dilution of one part in five million.
美
[daɪ'ljuːʃn]
