open coil annealing furnace

例句：

1. 1. The open-coil annealing furnace is used to heat and cool the wires in the production process.
   开式线圈退火炉用于生产过程中加热和冷却导线。
2. 2.The open-coil annealing furnace is an essential tool for metalworking operations.
   开式线圈退火炉是金属加工操作中不可或缺的工具。
3. 3.The open-coil annealing furnace is designed to improve the quality of the wires produced by the machine.
   开式线圈退火炉设计用来提高机器生产的线材的质量。