觇板 meaning in Chinese
boning board
sight board
sight vane
sighting board
sightingdisc
target
vane
Examples
- The two vanes are at right angles in plan, and each is either all shaded or all in sunlight .
上、下两块觇板在一平面图上相交成直角，每块觇板全是阴暗的，或全被阳光照射。
boning board
sight board
sight vane
sighting board
sightingdisc
target
vane