double leaf swing bridge 双翼平旋桥
double-leaf door 双截门
double leaf 双折叶 ; 双翼的
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。
Behind its blank facades sits a double-height wall covered in gold leaf, oriented to reflect the south light that streams in through a high window.
在其空白的立面后是覆盖着金箔的双层高的墙壁，以反射从高窗进入的南向光。
Wire-o binding a method of loose-leaf binding in which a continuous double loop of wire runs through punched slots along the binding side of a booklet.
双线圈装用连续的双圈铁丝绕穿过打在书本订口的方孔而成的一种活页装。
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