Upper cylinder lubrication

[化] 上部汽缸潤滑

?? 詞語組成解析

upper ['?p?]
adj. 地位較高的;上面的;內(nèi)地的;地表層的; n. 鞋幫,靴面;興奮劑;令人興奮的經(jīng)歷;
cylinder ['s?l?nd?]
n. 圓柱;圓筒;圓柱體;氣缸;
cylind卷+er表名詞 → 圓柱體
lubrication
n. 潤滑, 注油, 潤滑作用\\n[計] 潤滑

??? 情景例句

You and Dad.
你和爸爸。
When I traveled to a foreign country, I was very aware that I was a Chinese.
當我出國旅行時,我非常明白自己是一名中國人!
Modern industry is based on the conception of the maximum production at lowest cost,
以最低成本獲取最多產(chǎn)品,
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