面空 meaning in English
surface-to-air missile
Examples
- In order to increase the energy dissipation of stepped spillway at iarge unit discharge , the integhty dissipater of aerated splitter pier and steppe characteristics is studied . because of verticaj diffhaion now by aerated splitter and impachng steppe 3 by drop flow , the air concentration and the energy dissipation efficiency are greatly increased ; the potentiality of cavitations is decrease . in special at large unit discharge , this effect is more obvious
掺气分流墩的增加，明显地改善了阶梯面上的压强分布，消除或减小了阶梯凹角内和立面上部的负压；由于掺气分流墩使水流纵向扩散以及挑流落下后在阶梯上的撞击，使水流的掺气浓度和消能率都得到较大的提高，降低了阶梯面空蚀的可能性，特别是在大单宽流量时，这种效果更为明显。