例句與造句

1. Ambient air - measurement of the mass of particulate matter on a filter medium - beta - ray absorption method
   大氣空氣.過濾媒介上顆粒物質質量的測量.射線吸收法
2. Ambient air - measurement of the mass of particulate matter on a filter medium - beta - ray absorption method iso 10473 : 2000
   周圍環(huán)境大氣.過濾介質顆粒物質的質量測量. -射線吸
3. It's difficult to find beta-rays in a sentence. 用beta-rays造句挺難的