二次吸尽率：secondary exhausion
二次应用块：secondary application block(SAB)
二次载冷剂：secondary refrigerant
二次蒸发器：revaporizer
二次蒸馏水：double distilled water,redistilled water
二次蒸馏塔：after-fractionating
二次煮出法：double decoction process
二次转换器：secondary converter
二代磷酸铵：ammonium secondary phosphate
二代磷酸钙：calcium phosphate secondary
二氮化三钡：barium nitride
二氮化三钙：calcium nitride
二氮化三镁：magnesium nitride
二氮化三锰：manganese nitride
二氮化三铍：beryllium nitride
二氮化三锶：strontium nitride
二氮化三锌：zinc nitride
二氮亚烯基：diazenediyl
二氮杂呋喃：diazofurans
二档边肷毛：second skirtings; second pieces
二档齿轮组：second stage gear set
二道并条机：intermediate drawing frame
二道粗纱机：dandy reducer;inter speedframe;intermediate frame
二道拉伸辊：succeeding stretch roller
二道清棉机：intermediate scutcher;intermediate picker
二道梳理机：intermediate
二道梳毛机：intermediate card;second breaker;second breaker card
二道梳绵机：intermediate card
二等舱旅客：second cabin passenger
二等分算子：halver operator
二地址结构：two-address architecture
二地址指令：two-address instruction
二碘化合物：diiodo-compound
二碘化了的：diioddated
二碘烙氨酸：diiodothyronine
二电子转移：two-electron shift
二丁基二硫：butyl disulfide
二丁基硫脲：dibutyl thiourea
二丁基乙酸：di-n-butylacetic acid
二度存储器：two-dimensional memory
二度组织法：two-dimensional organization
二对端网络：two-port netword,two-terminal-pair network
二分标电路：scate-of-two circuit
二分法检索：binary search,dichotomizing search
二分式焦炉：half-devided coke oven
二分之一法：one-half method
二氟化苯硼：boron phenyl difluoride
二氟化合物：bifluoride,difluoro compound
二氟化氧钒：vanadyl difluoride
二氟基磷酸：difluorophosphoric acid