open fire tester

例句：

1. 1.The engineer used the open fire tester to check the safety of the new machine.
   工程师使用开火试验器检查新机器的安全性。
2. 2.The open fire tester helped the scientist to identify the chemical composition of the sample.
   开火试验器帮助科学家确定了样本的化学成分。
3. 3. The open fire tester was a valuable tool for testing the strength and durability of materials.
   开火试验器是检验材料强度和耐用性的一种宝贵工具。