blast period blowing period on air scavenging period
Related Translations:
送: 动词1.(运送; 传送) deliver; carry 短语和例子送报 deliver newspaper; 送医送药上门 deliver medical care right to the patient's home; 你自己把这些货物带走还是由我们送到你家里去? will you take the goods with you or shall we deliver