小下 meaning in Chinese

koshimo

Give me a sec . almost there
再等一小下，马上就好了
Big end down
上小下大钢锭模
In pattern , the concentration rises from the surface to the bottom ( in open channel flows ) . as for
型是指浓度从水面到底壁呈上小下大（明渠流）。
Later one of such kind of flag piled onto another , forming the present style of the national flag
由上小下大、上下相叠的两个三角形组成，旗面为红色，旗边为蓝色。