单词	大振
释义	大振 dà zhèngood
随便看	beta radiations Beta Radiations beta radiation survey beta-radiation survey betaradiation thickness gage beta radiation thickness gage betaradiation thickness gauge beta radiation thickness gauge beta radiation thickness meter beta radiation,β-radiation beta radiator beta-radiator beta radiilgraphy beta radioactive beta radioactive substance beta-radioactive substance beta radioactivity beta-radioactivity beta-radiograph dating beta radiography beta radiography dating beta raies beta ratio beta ratios betaray