twin hulls boat，twin-hull boat，twin-hull craft，catamaran ；

[例句] 他的双体船的速度可以达到37节。 His catamaran will do 37 knots.

[例句] 双体船将把游客从汉堡港运送过来. Catamarans will be transporting tourists from Hamburg from Hong Kong.

disymmetry ；

[例句] 连杆 式 门闩系统用于控制圆拉杆或扁拉杆通过双对称,左右门均适用. Rod - Latch system to control round or flat rods . RH and LH application through double symmetry.

[例句] 研究了子阵约束下双对称矩阵反问题的最小二乘问题. Finally, least - squares solution for the inverse problem of bisymmetric matrices with a submatrix constraint is proposed.

[医] gemination，atwain ；

[例句] 成双的袜子是别在一起的. Pairs of socks are pinned together.

[例句] 鸟常常成双配对. Birds often pair for life.

double fertilization ；

[例句] 双受精过程属有丝分裂前配子融合类型. Double fertilization is the type of the Premitotic syngamy.

[例句] 根据观察,在北京地区,软毛猕猴桃的双受精大多发生在授粉后30—72小时内. In Beijing area the double fertilization of Actinidia chinensis occurred 30 - 72 ho - urs after pollination.

a couple，a pair，duad，braces，a pair of ；

[例句] 他有一双清澈的蓝眼睛和一脸灿烂的微笑。 He has clear blue eyes and a dazzling smile.

[例句] 他有一双清澈的蓝眼睛和凸出的下巴。 He had clear blue eyes and a jutting chin.

bimonthly ；

[例句] 乳品与人类》杂志: 创刊于2001年, 双月刊. Dairy and Human magazine: Started publication in 2001, bimonthly issues.

[例句] 我们创办的《世界网络医院》是双月刊. A magazine titled World Online Therapy we publish is the bimonthly.

binocular ；

[化] double helix，double stranded helix，duplex ；

[例句] 正常的双螺旋DNA是螺旋形的, 像一根松松地卷曲的弹簧. Normal, double - helix DNA is spiral, like a loosely coiled spring.

[例句] 这就是双螺旋. This is the double helix.

macle，[化] bicrystals，crystal twin ；

[例句] 看看这些红色矿物颗粒, 它们具有双晶以及完全解理. Look at these grains. They have twins and perfect cleavages.

[例句] 可用区内不允许存在电学或光学双晶. N o electrical or optical twinning shall be allowed in usable zones.

double bed twin-bed，double bed ；

[例句] 你们喜欢一对单人床还是一张双人床？ Would you prefer twin beds or a double?

[例句] 他们买了一张双人床. They bought a double bed.

dual，[计] dral，dula，paired ；

[例句] 成双的袜子是别在一起的. Pairs of socks are pinned together.

[例句] 她那旷世无双的美貌无法形容. Her matchless beauty is beyond description.

dual nature，duplicity，dualism ；

[例句] 小城镇生活的双重性—安全但乏味 the double-edged quality of life in a small town—security and boredom

[例句] 这种双重性导致了法律保护方法的复杂性. This duality has caused the complexity of the legal protection method.

[医] twin cones ；

[例句] 进气分布器为双锥导流式. The air inlet distributor is a biconical diversion type.

[例句] 结果表明,化合物中锡原子呈五配位畸变三角双锥构型. The structure shows a distorted trigonal bipyramidal configuration with five - coordinations to a central tin atom.

[计] bidirectional，ovonic ；

[例句] 把祈祷想成一种 双向 的交谈. Think of prayer as a two - way conversation.

[例句] 我不明白为什么这个原则不能是双向的? I don't understand why this doesn't flow both ways.

[医] Diptera ；

[例句] 伪足为多数双翅目幼虫所特有. Pseudopodia are characteristic of many dipterous larvae.

[例句] 辽宁省地种蝇属四新种 ( 双翅目: 花蝇科 ) FOUR NEW SPECIES OF THE GENUS DELIA FROM LIAONING, CHINA ( DIPTERA: ANTHOMYIIDAE )

[计] dipulse ；

[例句] 提出双波长双脉冲激光产生三次谐波的方法. The method for third harmonic generation of double wavelength and double pulse laser is proposed.

[例句] 介绍了双脉冲氰化光亮镀银的工艺流程和工艺配方. The process flow and bath formula of double - pulse DMS cyanide bright silver plating were introduced.

[电] duplexer，duplexor ；

[例句] 本文设计了一种可用于LMDS中 的采用加方形脊T形 结的微波矩形波导双工器. Design of a microwave rectangular waveguide diplexer for LMDS is presented.

[例句] 而且, 双工器中的滤波器保持了E面的制造加工优势. In addition, the manufacturing advantages known from E - plane technology are maintained.

[语] diphthong ；

[例句] 有时你又把单词开头的辅音和双元音含糊掉. And then you slur by dropping initial letters and diphthongs.'

[例句] 双元音是元音的组合. Diphthongs are complex ions of vowels.

biangular，bicorn，[医] bicornate，bicornous ；

[例句] 但8:20你所看见双角的公绵羊、就是玛代和波斯王. The ram which you saw with the two horns represents the kings of Media and Persia.

[例句] 你所看见双角的公绵羊,就是玛代和波斯王. The two - horned ram that you saw represents the kings of Media and Persia.

bivalve ；

[例句] 介绍一种简便高效的双阀滤池改造技术. A simple and effective reconstruction technology of the dual - valve filter was introduced.

[例句] 采用双阀机构解决膜吸收过程中膜渗漏问题. The membrane leakage problem is resolved by adopting a dual - valve mechanism during the membrane absorption process.