双向式

Bifurcated Contact

双叉式簧片(触点)

biduplexed system 两双工系统 | bifurcated contact 双叉式簧片(触点) | bilateral 双向作用的

bilaterally invariant

双侧不变式

bilaterality | 两侧对称 | bilaterally invariant | 双侧不变式 | bilaterally matched attenuator | 双向匹配衰减器

double-acting hinge

双向合页

double-acting hammer 复动式锻锤 | double-acting hinge 双向合页 | double-acting pawl 双动棘爪,双动爪

double-acting steam cylinder

双向作用的蒸汽气缸

double roller chock 双滚轮式导览钳 | double-acting steam cylinder 双向作用的蒸汽气缸 | down halyard 降帆索

bisulphite

酸式亚硫酸盐亚硫酸氢盐

bisulphite 酸式亚硫酸盐 | bisulphite 酸式亚硫酸盐亚硫酸氢盐 | biswitch 双向硅对称开关

Dual carriage road

双向道路

"乾式水表","Dry-type water meter" | "双向道路","Dual carriage road" | "复式配水系统","Dual distribution system"

swivel plow

双向犁

"sulky plow ","乘坐式犁" | "swivel plow ","双向犁" | "top soil plow ","表土犁"

double butt strap joint

双向搭板接合

648 双搭板 double butt strap | 649 双向搭板接合 double butt strap joint | 650 复[式]卡[钳] double calipers

dual-directional sine bar

双向正炫规

23. 铰链式正炫规hinge type sine bar | 24. 双向正炫规dual-directional sine bar | 25. 圆锥量规cone gauge

DX

天线收发开关,双重的,双向的

DVD digital video disc 数字激光视盘 | DX 天线收发开关,双重的,双向的 | DYN dynamic 电动式的,动态范围,动圈式的

Supposed to Be：应该吧

我想我该睡了 i think i should slp | 应该吧 supposed to be | 希望 hope so

Plain Weave：平布

509 hopsack 方平织物 | 510 plain weave 平布 | 511 panama 巴拿马薄呢