Boreal period：北方後冰期

boreal forest zone 北方森林帶 | Boreal period 北方後冰期 | bottle-tree 酒瓶樹

Boreal period：北方期

Boreal Pacific province | 北太平洋部 | boreal period | 北方期 | boreal | 北的

break in period：磨合運(yùn)轉(zhuǎn)時(shí)間

break in oil 磨合油 | break in period 磨合運(yùn)轉(zhuǎn)時(shí)間 | Break in the Chain of Causation 原因鏈中斷

break in period：走合期

走合 break-in | 走合期 break-in period | 走合距離 break-in mileage

break in period：故障期,間斷期;試運(yùn)轉(zhuǎn)期

break-in keying 插話式鍵控 | break-in period 故障期,間斷期;試運(yùn)轉(zhuǎn)期 | break-in relay 插入繼電器

break in period：早期折損期

"breaker constant","斷路器常數(shù)" | "break-in period","早期折損期" | "breaking capacity","斷路容量"

budget billing plan period：預(yù)算計(jì)費(fèi)計(jì)劃期間

budget billing plan item 預(yù)算計(jì)費(fèi)計(jì)劃項(xiàng)目 | budget billing plan period 預(yù)算計(jì)費(fèi)計(jì)劃期間 | budget billing plan procedure 預(yù)算計(jì)費(fèi)計(jì)劃程序

building-up period：建立時(shí)間,積累周期(快堆燃料再生快慢的量度)

building-up of voltage 電壓建起,電壓升起 | building-up period 建立時(shí)間,積累周期(快堆燃料再生快慢的量度) | building-up time 建立時(shí)間,增長時(shí)間

building-up period：增建期

增建原理 building-principle | 增建期 building-up period | 增建 buildup

building-up period：建立時(shí)間(磁通的),積累周期

電壓建起,電壓升起 building-up of voltage | 建立時(shí)間(磁通的),積累周期 building-up period | 建立時(shí)間,增長時(shí)間 building-up time