您要查找的是不是：
- A級管道the A-level pipeline
- 核級管道Nuclear piping
- 100級管道式過(guò)濾結構潔凈通道的研制Class 100 clean tunnel with filter tube structure
- 摘要核級管道系統的設計是個(gè)復雜的優(yōu)化問(wèn)題。It is complex optimum problem to design the nuclear piping system.
- 管道pipeline
- 綠A級A-grade green
- 不僅A而且not merely A but also B
- A級表面Class A surface
- A股A-share
- 級聯(lián)connection
- 管道系統ductwork
- 校級field rank
- 把A誤以為take A for B
- 大學(xué)英語(yǔ)四級College English Band 4
- 船級ship' classification
- 三級片third-grade film
- 無(wú)級stepless
- 級配graduation
- 第二級secondary
- 大學(xué)英語(yǔ)六級考試CET-6 [College English Test, Band Six]
