lance boom

• 喷杆,喷枪

lance boom的用法和样例：

例句

1. This paper introduces the oxy-coke lance for indensification of EAF melting.
   介绍了焦氧喷枪强化电炉冶炼的工艺及其试验结果。
2. The types of nozzle and lance used must be appropriate for the type of work and all operators must be experienced in the use of the particular combination chosen.
   使用的喷嘴和喷枪的类型必须适合于具体的作业类型，所有操作人员均必须熟悉如何使用所选定的类型组合。