There were no significant difference on operation time and drain time of the three groups (P>0.05);

三组手术时间和引流管放置时间无明显差异（P>0.05）；

youdao

After di water rinsing and before baking, a drain time of 5 minutes with an elevation change is recommended to remove standing water that may leave marks in the paint during baking.

去离子水洗后，烘干之前，推荐用一运输链驼峰，至少沥液5分钟，与除去在烘干过程中可在漆面上流下痕迹的水份。

youdao

Interns aren't supposed to be a drain on time, energy or resources.

因为实习生不应该成为雇主在时间、精力或者资源上的负担。

youdao

"And like Lyndon Johnson he has this really ominous problem, which is if you escalate in Afghanistan and we end up in that swamp that will over time be a kind of constant drain on support and enthusiasm among young people, among minorities,among liberals, among progressives and it will really sap the president's ability to continue to energize this broad agenda,".

VOA: standard.2009.12.29

That includes house cleaning, administrative work, bookkeeping and other tasks that drain your time and energy.

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One big reason chiefs are fleeing boards is that serving on a public board is a huge drain on time.

FORBES: Magazine Article

"The significant drain on time and resources companies face when scheduling and carrying out interviews means for many, it can be an expensive and time-consuming task, " says Matson.

BBC: Skype interviews: Is it more tricky to be grilled by video?