oxygen breathing apparatus造句
例句与造句
- Respiratory protective devices for self - rescue - self - contained closed - circuit compressed oxygen breathing apparatus incorporating a hood - requirements , testing , marking
带面罩的自救用自带闭路式压缩氧气呼吸器的呼吸防护 - It's difficult to find oxygen breathing apparatus in a sentence. 用oxygen breathing apparatus造句挺难的