Engler distillation test

例句：

1. 1. This is thefirst step in the Engle's distillation test.
   这是恩格勒蒸馏试验的第一步。
2. 2. The Engle's distillation test has been widely used in the field of chemical engineering.
   恩格勒蒸馏试验在化学工程领域被广泛使用。
3. 3.The results of the Engle's distillation test are crucial for the optimization of the process.
   恩格勒蒸馏试验的结果对于优化过程至关重要。