Top view of wing nut.

翼形螺母的俯视图。

Top view of square head bolt.

方头螺钉的俯视图。

Top view of square nut.

圆头一字槽螺钉的俯视图。

Top view of square nut. Selection box represents thread diameter.

方螺母的俯视图。选择框代表螺纹直径。

Top view of wing nut. Selection box represents thread diameter.

翼形螺母的俯视图。选择框代表螺纹直径。

Top view of washer or spacer with adjustable inside and outside diameters.

内径和外径都可调整的垫圈或垫片的俯视图.

Top view of spring lock washer or spacer with adjustable inside and outside diameters.

内径和外径都可调整的弹簧锁垫圈的俯视图.

Top view of chamfered washer or spacer with adjustable inside and outside diameters.

内径和外径都可调整的有切角的垫圈或垫片的俯视图.

However, in practice, it is preferable that the acoustic drivers overlap in a top view.

但是, 在实际中, 优选的是在俯视图中声学驱动器重叠.

A top view of the helicopter.

一顶视图的直升机.