Second phase of cold commissioning involves 2-4 persons from the welder and air-knife manufacturer.
冷试第二阶段将有焊机、气刀制造商的2 - 4人参加。
2
I saw the gleam of the knife as it flashed through the air.
我看见了刀在空中划过时的闪光。
《牛津词典》
3
The low power, low noise, blower fan, wind knife mouth dry air temperature is used, the effective protection of material itself color and quality, the effect is better.