two-stage的用法和样例：
例句
- He was my senior at Yale by two years.
他是耶鲁大学比我高两级的学生。 - There are two steps up onto the bus.
上公共汽车有两级踏板。 - The project took place during the teacher's in-school probationary teaching period, and had two stages.
研究共分二阶段进行。 - In some cases, a two-stage severe hydrotreater using Ni-Mo and precious metal catalysts in the first and the second stage respectively can be used.
有时更得采用二阶段制程，前后段分别使用镍钼和贵金属触媒。
词汇搭配
- two-stage combustion 两级燃烧
- two-stage extractor 两级萃取器
- two-stage agitation 两段搅拌
- two stage sampling 两阶段抽样法,二次抽...
- two stage 两级的(二阶段...
- two stage regulator 两级调节器
- two-stage regulator 双级调节器
- two-stage compressor 两级压缩机,二级压气...
- two-stage ejector 两级喷射器
- two-stage lift 两级提升器
- two stage pump 二级泵
- two-stage supercharger 二级增压器
- two-stage pump 双级泵
- two stage crusher 两级破碎机
- two-stage polymerization 两步聚合
- two-stage sampling 两级抽样,二重抽样,...
- two-stage operation 二期手术
