by a ratio of

A Method for the Reflux Ratio and the Number of Theory Plates of Binary Ideal Solution Complex Distillation Tower by Using Microsoft Excel

用microsoft excel计算二元理想物系复杂精馏塔的回流比和理论板数

The interaction of bovine serum albumin ( BSA), sodium dodecyl sulphate ( SDS) and Azur A ( AA) was studied by spectral probe. The influence of the molar ratio of SDS/ BSA on the absorption spectra of BSA-SDS-AA complex was investigated.

应用光谱探针技术研究了牛血清白蛋白（BSA）/十二烷基硫酸钠（SDS）/天青A（AA）相互作用的吸收光谱，考察了SDS/BSA摩尔比对BSA/SDS/AA反应体系吸收光谱的影响。

Botulinus toxin from a clostridium botulin fermentation broth was separated and purified by membrane filtration technology. To remove the bacteria from the fermentation broth, we chose a 0.65 μ m pore size microfiltration membrane, reaching a removal ratio of 100%.

报道了把膜分离技术应用于肉毒发酵液的纯化.用孔径为0.65μm的微滤膜对发酵液进行除菌，除菌率达到100%；

Blu-ray discs outsold HD-DVDs by a ratio of two to one before Christmas and by the end of last year there were 4m Blu-ray-capable players in North America, compared with about 750,000 HD-DVD machines.

圣诞节前，蓝光影碟的销售量是HD-DVD的两倍。到去年年底，北美有400万台支持蓝光格式的影碟机，而HD-DVD影碟机仅为75万台左右。

The contrast ratio of reflective bistable twisted nematic displays are optimized by means of a parameter space approach.

利用参数空间方法，优化了反射式双稳态扭曲向列相液晶显示的对比度。

The invention discloses a pesticide for eradicating mosquitoes, which comprises 80-97 % by weight ratio of 1-octene-3-ol .

本发明公开了一种诱蚊药剂, 含有重量百分比含量为80～97%的1-辛烯 -3- 醇.

Users are divided into two groups, according to a threshold set by the ratio of local user channel gain and sum channel gain of all the users.

根据本地用户信道增益与所有用户信道增益之和的比值设定一个门限，将用户分为两组。

Our product outsell theirs by a ratio of two to one.

我们的产品比他们的畅销,销售量为他们的二倍.

The relation between differential driven ratio accuracy and the common normal length change of cylindrical bevel wheel has been found by experimental method, which provided a efficient way for cylindrical bevel wheel manufacturer to control the common normal length change of the wheel.

通过实验研究的方法，寻找出差动传动比精度与斜齿圆柱齿轮公法线长度变动量的关系，为斜齿圆柱齿轮的加工提供一种可以控制斜齿圆柱齿轮公法线长度变动量的有效方法。

Results monomer of rubescensin A was obtained by using determinate ratio of organic regents and recrystallization.

结果在一定比例的有机溶剂洗脱下并利用重结晶可以得到冬凌草甲素纯品.

The spinning principle of rotor spun composite yarns was discussed and different kinds of rotor spun composite yarns with different appearance and structures were produced by combining staple fibers with filament yarns under varying filament over-feed ratio on a modified open-end rotor spinning frame.

介绍了转杯纺复合纱的纺纱原理，并在经过改装的转杯纺纱机上，通过调整涤纶长丝的超喂率生产不同外观和结构的转杯纺复合纱。