钡以重晶石形态 ( 硫酸钡 ) 在工业上用作油漆的白色涂料.Barium as barite ( barium sulfate ) is used industrially as a white pigment for paint.红碧玉、重晶石等具有喷流岩的特征.Red carneol and barite etc. have the features of plume rocks.实际的重晶石用量取决于井下的实际需要.Actual ...
The luminous dial on the clock showed five minutes to seven.那只钟的夜光钟面显示时间为6点55分。an alarm clock with a luminous dial夜光闹钟Most clocks and watches in this shop are in luminous paint.这家商店出售的大多数钟表都涂了发光漆。He fixed me with those l...