照明辐射的照度通常是以光度为单位.Illuminance of illuminating radiation is always measured in photometric units.当照度低于约1勒克司时,锥状细胞就不再起作用.When the lighting level falls below about 1 lux the cones cease to act.规定的被照明表面上的照度平均值.It refers to th...
The book has been selling like hot cakes. The publishers are going to reprint it.这本书一直畅销, 出版社将再版....a reprint of a 1962 novel.1962年小说的重印本Don't bug private conversations, and don't buy papers that reprint them.不...