英语缩写"LG" "BC"分别是什么意思?

LG [简明英汉词典]
=Landing Gear (飞机)起落架
LG [英汉计算机词汇]
= LarGe,【修】大; = Light Gun, 光电子枪，光笔; = Line Generator, 行发生器; = LonG, 【修】长
lg [英汉化学大词典]
n.长度,常用对数以10为底
LG [航空英语缩写词典]
Landing Gear 起落架
Landing Ground 降落场
laser Gyro 激光陀螺
Leg 航段
Long 长
Landing Gear 起落架,起落装置
Landing Gear 起落架
Leg 航段
Long 长
LUXAIR-SOCIETE LUXEMBOURGEOISE DE NAVIGATION AERIENNE S.A. 卢森堡航空公司

BC [简明英汉词典]
n.公元前
BC [英汉计算机词汇]
= Basic Control mode,基本控制方式; = Binary Code, 二进制(代)码; = Binary Counter, 二进制计数器; = Bit Clock (3704), 比特时钟; = Board of Control, 控制板，控制盘; = Branch Concentrator, 【PFA】分行集线器[集中处理机]
BC [航空英语缩写词典]
Baggage Container Train 集装箱拖车
Back Course 反航道
Basic Charge 基价
Before Christ 公元前
Between Centers 中心距
Broadcast 广播

LG:
n. 起落架(大颗粒,长度,水准仪,液化气体,长)
BC: [ 'bi:'si: ]

(或B.C.)公元前(=Before Christ)

英英解释:
副词bc:

1. before the Christian era; used following dates before the supposed year Christ was born
同义词：B.C., before Christ

Landing Gear 起落架
Before Christ公元前？

楼上都对拉