1) ratio
突扩比
1.
Based on local model experiment,the resistance coefficient ξ vn on valve section under the variant sudden enlargement direction、ratio、initial point behind the valve in flush gallery is studied,and we establish a widely applying range emprical calculated formula,which can be referred to by people engaged in education,research and project designing.
在局部模型上，对阀门后廊道不同的突扩方向、突扩比、突扩起点的阀门段阻力系数ξｖｎ进行了研究，并建立了适用范围较大的经验计算式。
2) sudden expansion
突扩
1.
This problem results from the deposition of formed solid CO_2 at a sudden expansion of the downstream pipe of safety valve.
CO2在通过安全阀的排放过程中,形成的固体CO2在安全阀下游管道突扩处沉积,导致管路的堵塞和冻结,危害被保护系统的安全。
3) sudden expansion flow
突扩流动
4) facingback step
突扩段
1.
With the help of recirculation zone in the facingback step, premixed combustion can be stabilized in the micro-combustor with a 5 mm-length facingback step and the maximum air excess coefficient is up to 1.
在突扩段内高温回流区的作用下,在带有5mm长突扩段的燃烧室内可以实现完全预混燃烧,最高运行界限可达1。
5) sudden expansion combustion
突扩燃烧
6) channels expending
突扩通道
参考词条
补充资料：突头突脑
1.犹没头没脑。突然地;出人意料地。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。