double leaf swing bridge 双翼平旋桥
double leaf 双折叶
double-leaf bascule bridge 双叶竖旋桥
double leaf door 双截门
double-leaf gate 扉闸门 ; 双扉闸门
Double-leaf fern Pictures 双扇蕨图片
double leaf gate 双翼大门
Double-leaf forceps 双叶产钳
Double leaf forceps 双叶小产钳
The original seal structure and the improved seal structure of the double-leaf swing door at the outside end are described.
介绍了外端双扇摆门的原密封结构和改进后的密封结构，对比分析了硅橡胶条、尼龙毛刷和羊毛毛刷的密封性能。
Courses of Dalian Maple Leaf Middle school integrate with all English Canadian courses of senior high school's "double language, double degree".
枫叶初中课程与“双语双学历”的枫叶高中全英文加方课程对接。
Primary observation to T2-generation showed that double mutant plant had obvious dwarf phenotype, but had no defect in leaf trichome and vasculature.
对T 2代双突变体植株表型初步观察显示，植株有明显矮化现象，但维管束和叶毛的发育基本正常。
应用推荐