高級學徒
查看詳細資料
TOP
黎sir - 香港中學文憑試奪5**補�
學院師父
原帖由 Hin2000 於 2015-6-5 03:44 PM 發表 (How to calculate?) A diver is directly under a large patch of dirty oil floating on the water surface. The oil blocks all the light falling on it. Assume the oil patch is circular in shape and h ...
查看個人網站
Regit