Bolometric
a. 測輻射熱的
??? 情景例句
I'm sorry. For these large orders, we insist on payment by L C.
對不起。對于這樣金額大的訂單，我們堅持用信用證支付。
Every man has his hobby-horse.
人各有所好。
How do they come packaged?
貨是怎樣裝的呢？