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护(装置)
bus-tie switch || 母线联络开关
busbar insulator || 母线绝缘子
busbar material || 母线材料
busbar protective device || 母线保护装置
bush || 轴衬，衬套，套筒
bush bearing || 衬套轴承，滑动轴承
bushel || 蒲式耳 (1蒲式耳=4配克=35.3升)
bushelled iron || 熟铁(搅炼炉铁)
bushing || ①衬套，轴套，销套②轴衬，轴瓦，套管
bushing block || 衬套
bushing current transformer || 套管式电流互感器
bushing insulator || 绝缘套管，套管绝缘子
bushing test tap || 套管试验抽头
bushing type current transformer || 套管式流互感器
business office || 商务办公室
business planning || 经营计划
business process reengineering || 企业流程改造[BPR]
business system planning || 企业系统规划法[BSP]
buster || 堵口
bustle pipe || 风圈
busy || 忙
busy back tone || 忙音，蜂音，占线音
busy hour || 最忙钟点，繁忙时间
busy indicator || ①占线指示器②占用指示器
busy signal || 占线信号
busy state || 忙碌状态
busy tone || 忙音，占线音
busy-buzz || 忙蜂音，占线蜂音
butadiene || 丁二烯
butadiene elastomer || 丁二烯弹性体
butadiene epoxy resin || 丁二烯环氧树脂
butadiene sodium polymer || 丁(二烯)钠聚合物
butadiene vinyl copolymer || 丁二烯-乙烯共聚物
butadiene-acrylonitrile copolymer || 丁二烯-丙烯腈共聚物
butadiene-acrylonitrile-styrene copolymer || 丁二烯-丙烯腈-苯乙烯共聚体
butadiene-propylene copolymer || 丁二烯-丙烯共聚物
butadiene-styrene copolymer || 丁二烯-苯乙烯共聚物
butadiene-styrene vulcanizate || 硫化丁苯橡胶
butt || ①锭，坯，铁锭②端面③底部，锭尾④平接⑤货车车身
butt contact || ①对接接点，压接式接点，半圆形接点②对接接触
butt ingot || 钢锭切头
butt joint || ①对接，对接接头②对焊
butt joint weld || 对接焊
butt place || 突出部分、粗端部分
butt riveting || 对头铆接
butt seam weld || 对线焊
butt seam welding || 对焊
butt weld || 对接焊缝
butt welding || 对接焊，接触对焊，对接焊接
butt-fusion || 熔融对结
butt-jointed seam || 对接缝
butt-sintering || 对接烧结
butt-type core || 对接式铁心
butt-welded joint || 对焊接头
butt-welded tube || 对缝焊管
butt-welding machine || 对焊机
butterfly || ①蝶形板，蝶形阀，蝶形的②活动目标探测器③节气门，节流门
butterfly carburetor || 蝶阀化油器
butterfly diagram || 蝴蝶图
butterfly hinge || 蝶形铰链
butterfly insulator || 蝶式绝缘子
butterfly method || 蝶形空型轧制法(轧制角钢)
butterfly nut || 蝶形螺母
butterfly structure || 蝶形结构，蝶形组织
butterfly throttle valve || 蝶形节流阀
butterfly twin || 蝶形双晶
butterfly valve || 蝶形阀，风门，混合气门
buttering technique || 堆叠焊法
butting || 扎接，对接
button || ①按钮②金属小块，金属小珠
button cell || 扣式电池
button die || 镶入式圆形凹模
button menu || 按钮菜单 按钮菜单
button plate || 凸点钢板
button switch || 按钮开关
button test || 熔珠试验法
button-bead || 圆形端头，球头
button-spot weld || 点焊
buttress brace || 支撑刚性梁，加劲梁，横撑
buttress thread || 倒牙螺纹，直三角螺纹，锯齿螺纹，偏梯形螺纹
buttress thread form || 锯齿形螺纹
buttstrap || 对接搭板，肩托，肩托板，平接盖板
butyl rubber || 丁基
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