单词	钠金属
释义	钠金属sodium meate
随便看	operational system development operational test operational test and evaluation operational test and evaluation force operational test and evaluation--ot&e operational test and evaluation，ot&e operational testing operational test land station operational threshold operational time operational training course operational training course (otc) operational transconductance amplifier operational transconductance amplifier {=ota} operational transient operational unit operational unit number operational unit，ou operational use time operational variable operational virus operational voltage operational wastes operational weather category operational weather limit