Klystrons
(klystron 的復(fù)數(shù)) n. 調(diào)速管\\n[化] 速調(diào)管
??? 情景例句
How many do you want? I can probably get the owner to bring down the price.
你要幾只？我大概可以找店主殺價！
Do you offer FOB or CIF?
你們報船上交貨價還是到岸價？
Hello, Jim! May I ask you some questions?
你好，吉姆！我可以問一問題嗎？