delta-t meaning in Chinese

定界定节
时间差；时差

Delta - t timing unit
时差计时单元
The main results are as follows : 1 effects of light quality and kt on cotyledon enlargement 5 - d - old seedlings of arabidopsis wild type and mutants were harvested and the cotyledons were cut to use as excised cotyledon or the whole seedlings were used as intact cotyledon . excised and intact cotyledons were incubated in the medium ( ph 6 . 0 ) with or without kt under white light ( wl ) , red light ( rl ) , far - red light ( fr ) and uv - b at 21 ? ? for some periods of time before cotyledon area were determined by a delta - t area measurement system
主要结果如下：一、光质和ky对于叶扩大的影响白光、红光、蓝光明显促进5天龄幼苗离体和连体子叶扩大，远红光对子叶的扩大效应较弱， uv - b对子叶的扩大有抑制；对突变体的研究表明，红光下光敏色素b 、远红光下光敏色素a 、蓝光下隐花色素1对子叶的扩大起主要调节作用。