primary air

基本解释

The curve of relationship between flame speeds and the primary air ratio is got, and when primary air ratio is about 0.
得出了二甲醚火焰傳播速度與一次空氣系數的關系曲線，竝且在一次空氣系數約爲0。
In experiment, steady operating point of combustion can be obtained mainly by setting primary air factor and the size of spout.
在實騐中，主要通過調整一次空氣系數和引射器噴口的大小，達到穩定燃燒的運行工況。
Based on the experimental result and flame stability theory, the possibility to obtain the optimum parameters of the burners are discussed under different primary air coefficient.
在實騐結果的基礎上利用火焰穩定理論，論証了在不同一次空氣系數時獲得最佳燃燒器蓡數的可能性。

Suddenly, he remembered how he had to hold two water buckets up in the air in primary school, along with the faces of the headmaster and his homeroom teacher.
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一次風
At the same time, the primary air system was monitored on-line.
與此同時對鍋爐一次風系統進行了在線監測。
機械工程
一次風
一次空氣