吸气;抽气

air suction的用法和样例：

例句

He sucked hard for air to keep breathing.他拼命吸气以维持呼吸。
When we breathe,we draw air into our lungs.当我们吸气时，把空气吸入肺里。
After refilling ink, extract a little ink using suction tool.填充墨水后用抽气工具将少许墨水抽出。
It possesses vacuum air bleeding and vacuum oil adding function.具有对电力设备真空抽气和真空注油功能。

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学英语单词

actual volume

amount of loss

Amphicarpaea ferruginea