杜瓦微漏孔和真空室内部材料放气使杜瓦真空度下降.用英语怎么说？

杜瓦微漏孔和真空室内部材料放气使杜瓦真空度下降.

Leakage and outgas of dewar vacuum vessel also is analysed.

leakage

n. 漏，漏出，泄露，[商]漏损率，漏损量，渗漏物，漏出量；

例句
A leakage of kerosene has polluted water supplies...
泄漏的煤油污染了水源。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

Dewar

n. 杜瓦瓶；

例句
Speeches delivered by Mr Dewar and Mr Wallace indicated their views were converging...
杜瓦先生和华莱士先生发表的讲话表明他们的观点越来越接近了。

vacuum

n. 真空，空白，空虚，清洁；v. 用真空吸尘器清扫；

例句
He could also learn to use the vacuum cleaner, the washing machine and other household appliances.
他可以再学学使用吸尘器、洗衣机和其他家用电器。

vessel

n. 容器，船，飞船，血管，管束，…的化身；

例句
The vessel yesterday reached anchorage off Dubai.
船昨天到达了迪拜附近的泊地。

also

adv. 也，同样，并且；conj. 另外；

例句
The media have also abetted the feeling of unreality.
媒体也在一旁对这种非现实感推波助澜。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

analysed

v. 分析，分解，解释( analyse的过去式和过去分词 )；

例句
They had their tablets analysed to find out whether they were getting the real drug or not.
他们将药片拿去化验以查明他们得到的是否是真药。