Where a He-leakage test is required in the Technical Data Sheet,...这句话中的He-leakage是什么意思啊整句为：Where a He-leakage test is required in the Technical Data Sheet,this test has to follow ASTM E498 (vacuum) or ASTM E499 (pressur

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Where a He-leakage test is required in the Technical Data Sheet,...这句话中的He-leakage是什么意思啊
整句为：
Where a He-leakage test is required in the Technical Data Sheet,this
test has to follow ASTM E498 (vacuum) or ASTM E499 (pressurising).

氦泄露.
全句：
需要有氦泄露测试所需的技术数据表,这个测试必须遵循ASTM E498（真空）或ASTM E499（加压）.

He-leakage 意思是氦泄露哦

在他泄漏测试中需要技术数据表,这个测试必须遵循ASTM E498(真空)或ASTM ps3增压)。

技术数据表中要求进行氦气渗漏试验，本试验必须按照ASTM E498标准（真空）或ASTM E499标准（加压）进行。

HE - 氦气
He-leakage 应该就是“氦气渗漏”的意思。

不知道

Where a He-leakage test is required in the Technical Data Sheet,...这句话中的He-leakage是什么意思啊整句为：Where a He-leakage test is required in the Technical Data Sheet,this test has to follow ASTM E498 (vacuum) or ASTM E499 (pressur Ihaven‘t see Mr.Hu for days,can you tell me____?A.where does he goB.Where he has beenC.Where he goesD.Where he go I didn't know where he lived还是I didn't know where he lives对?-Why didn't you go to his birthday party yesterday?-Because I didn't know ______.He forgot to tell me.A.where did he live B.where he lived C.where does he live D.where he lives选B Didn't he leave a m____for you to tell you where he was? i really don't know_____________.后面选什么?i really don't know_____________.A.where he was born B.where he is bornC.where was he bornD.where is he born选什么?为什么. The police asked the little boy _____. A.The police didn't know _____. A.where does he live B.where he lives C.where did he live D、where he lived 英语单项选择He dosen't know --------is-------he was born.A.that where B.that what C.where that D.what where请问 选什么 说明理由 where does Mr.x live?can you guess?sorry,i can't guess()a where he lives in B where he lives i haven't the slight idea _____?一道高中英语语法题A.where does he lives B.that he lives where C.where he lives D.that where he lives为什么这题不选D,选C?麻烦分析一下 When he got _______the train ,he didn't know where he was .A on B off 选什么?为什么? I don't know B.A．where does he live B．what is he doing C．where he lives D．what he is dring itI don't know B.A．where does he live B．what is he doingC．where he lives D．what he is dring it I don't remember where _in that city when he was young.A.did he work B.he worked C.he has workedD.has he worked -We haven`t seen John for a long time.-Where do you think____?A he wentB has he goneC he has goneD he has been sneak leakage leakage意思 Water leakage He got to a quiet place ,(）he thoght she can't find him 是where还是which He got to a quiet place,()he thoght she can;t find him 填which 还是where