When numbers of the inner nozzle are enough, plug nozzle has less size, less weight and higher thrust efficiency than the bell nozzle under same area ratio.
在单元数足够多时，环簇式塞式喷管可比相同面积比的钟形喷管的尺寸更小，重量更轻，推力效率更高；
2
The selection of center distance and gear ratio distribution for a reducer with double-circular-arc gear will have a direct effect on its size, weight and loading capacity.
双圆弧齿轮减速器中心距和传动比分配的确定，直接影响减速器承载能力、重量和体积。
3
The result indicated that the molecular weight decreases, the grafting ratio and particle size increase with the increase of initiator concentration.