双向的英文：
bidirection

Bi-directional rotating bezel
双向转动表圈

(of traffic)in lanes travelling in both directions
(指交通)双向流动的.

A contraflow system is in operation on this section of the motorway.
这段高速公路的一侧正在实行双向行驶。

double immunodiffusion
双向免疫扩散

TWA (Two-Way Addressable)
双向寻址

The data bus is bidirectional
数据总线是双向的

two-direction linear stepping motor
双向直线步进电动机

PET resin and bi-directional stretching
PET塑料的双向拉伸

The two-way flow will mark the free migration of population
这种人口的双向流动是“自由迁徙”的标志。

Full duplex: Data transmission in both directions simultaneously.
全双向:数据同时的接收及传发.

Bipolar shift registers are classified as unidirectional and bidirectional
双极型移位寄存器可分为单向和双向两种。

He attempted to investigate bidirectional streaming by inoculating two dishes with R. oryzae
他试图研究双向流动的问题，他把米根霉接种于两个培养皿。

This Butterfly Valve is bi-directional and may be installed in either direction.
这种蝶阀是双面的,可以在任何一面安装。

Oracle9i Lite Mobile Server offers robust, highly scalable, bi-directional, asynchronous data synchronization between Oracle9i database and thousands of mobile devices over any wired or wireless network.
Oracle9i Lite Mobile Server 通过任意有线或无线网络在Oracle9i Database 与成千上万的移动设备之间提供强健的、高度可伸缩的、双向异步数据的同步。

One or sometimes a bidirectional pair of buttons placed between them allows items to be selected and transferred from one box to the other, as shown in Figure 21-13. It is so much more pleasant when the idiom is buttressed with the capability to just click and drag the desired item from one box to another without having to go through the intermediate steps of selection and function invocation.
如图21-13所示，有两个相邻列表控件，一个显示可用项；另一个显示已选项，这是一种常见的图形用户界面习惯用法。 在它们之间有一个按钮，有时是双向的一对按钮，允许选择项目并且从一个框转移到另一个框。 如果这种习惯用法可以在左右两个框之间直接拖放条目，而不需要选择和功能调用的中间步骤，则会更加令人满意。