The orchid is a plant that resembles lizards flicking their red tongues.兰花就像蜥蜴吐出的红舌头。Mexican epiphytic orchid having pale green or yellow - green flowers with white purple - veined lip.墨西哥的一种附生兰,花淡绿色或黄绿色,唇瓣白色、有紫色脉纹.There...
This substance has now been cloned by molecular biologists.该物质现在已被分子生物学家克隆。Fourteen ESTs were cloned by RT - PCR and SSH analysis of the Rht - Blc isogenic lines.通过RT -PCR 和对Rht近等基因系的抑制缩减杂交(SSH),我们还克隆了14个有明显开放读码框的EST序列.E...
Exciton is electron - hole pair held together by their mutual Coulomb interaction.激子就是由电子和空穴在相互间的库仑力作用下,相互维持在一起的电子 -- 空穴对.As to the emission at 370 nm, It'should result from exciton recombination radiation.而在370nm处的...