variable-angle reflection
... variable-angle nozzle ==> 可变角度喷嘴,可调导叶,可转喷嘴 variable-angle reflection ==> 变角反射 variable-aperture flowmeter ==> 变孔口流量计 ...
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短语
可变角度内反射元件
variable-angle internal reflection element
;
angle internal reflection element
变入射角反射
Multiple-incident reflection