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链式反应
branching mechanism || 支化机理
branching point || 分支点
branching process || 分支过程
branded oil || 优质油
brasque || 耐火封口材料，耐火堵泥，炉衬，衬料，填料
brass || ①黄铜②铜锌合金
brass ball || 黄铜球
brass brazing alloy || 黄铜焊接合金
brass bushing || 黄铜衬圈，黄铜衬套
brass casting || 黄铜铸件
brass foil || 黄铜箔
brass nuts || 铜螺帽
brass plate || 黄铜板
brass plating || 镀黄铜
brass rod || 黄铜条
brass sheet || 黄铜薄板
brass solder || 黄铜钎焊料
brass tube || 黄铜管
brass wire || 黄铜丝
brass wire brush || 铜丝刷
brassile || 黄铁矿
brassing || 黄铜铸件
brastile || 压铸黄铜
braunite || ①布氏体②褐锰矿
braze || ①钎焊，钎接②铜焊，硬焊
braze welding || 铜钎焊
brazed all-metal honecomb sandwich || 铜焊全金属蜂窝夹层结构
brazed joint || 钎焊结合
brazeing || 渗焊
brazing || 铜焊，钎焊，硬焊
brazing ability || 可钎焊性
brazing alloy || 钎焊合金
brazing brass || 钎焊黄铜
brazing filler metal || 钎料
brazing flux || 钎剂
brazing joint || 钎接
brazing metal || 硬焊合金
brazing mixture || 钎焊粉
brazing solder || 黄铜焊料
breach || ①破坏，违犯②破口，裂口
bread board || ①试验(电路)板，模型板②功能试验③实验性的，模型的
bread board design || 模拟板设计
bread board experiment || 模拟板实验
breadth || 宽度
breadth coefficient || 绕组系数
breadth factor of winding || 分布系数
breadth of tooth || 齿宽
break || ①断裂，破裂，断口，断面，裂缝②游动花纹③打断，切断
break arc || 切断电弧
break back contact || 静触点，开路接点
break down || 破坏
break line || 波浪线
break point || 分割点，断点，折点
break spark || 断路火花
break up || 解散，分散，消散
break-before-make contact || 先断后合触点
break-break-make contact || 断-断-合触点
break-down strength || 破坏强度，断裂强度
break-in || 走合
break-make-break contact || 断-合-断触点
break-point instruction || 断点指令
break-up energy || 分离能
breakability || 易破碎性
breakage || 破裂，断裂，破坏
breakaway || ①断开力，折断力②脱钩安全器③中断，破裂，剥裂④起步
breakaway speed || 飞逸转速
breakaway torque || 起步转矩，启动转矩
breakaway type connector || 分离连接器
breakaway valve || 脱钩安全阀
breakdown || ①击穿②失效，故障③断裂，破损，破坏，破裂，抛锚
breakdown characteristics || 击穿特性
breakdown crane wagon || 事故起重机
breakdown current || 击穿电流
breakdown diode || 击穿二极管
breakdown lorry || 救险起重机，抢修工程车
breakdown maintenance || 故障修理，停工检修，事故维修
breakdown of insulation || 绝缘击穿
breakdown of operations || 作业故障
breakdown potential || 击穿电位
breakdown potential gradient || 击穿电位梯度
breakdown process || 击穿过程，崩溃过程，断裂过程
breakdown slip || 极限转差率，停转转差率，临界转差率
breakdown spot || 击穿点
breakdown strength || 击穿强度
breakdown test || ①击穿试验②破坏试验③断裂试验
breakdown time || 击穿时间
breakdown torque || 失步转矩，停转转矩
breakdown truck || 程抢险车
breakdown vehicle || 救险起重车，抢修工程车
breakdown voltage || 击穿电压
break
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