代用

Only Cr reacts with DDTC to form a 1: 3 complex which is then extracted with methyl isobutyl ketone and determined by flame atomic absorption spectroscopy.

本文拟定的方法是在pH-4条件下，用二乙胺硫代甲酸钠与甲基异丁基甲酮络合萃取铬，用原子吸收光谱法测定。

Methods: Thirty comp lete crown wax patternsmade with a brass die were divided randomly into 5 groups.

用铜制全冠代型模具制作30个全冠蜡型，随机分成a、b、c、d和e共5组， e组作为对照组，用Titavest CB包埋材料一次性包埋。

Gargle twice a day with warm salt water (use Listerine if you don't trust salt).

每天用温盐水漱口两次（如果觉得盐-不卫生，也可以用李斯特林漱口水代-）。

Six hundred ova were transfered into twenty-nine pseudopregnant recipients. Fifty-five offspring were born from the ova mircroinjected with the Bcl-2 fragment expression cassette.Twelve of them were proved to be gene integration positive by PCR .Four founder mice,two male and two female ,were further confirmed to be transgenic by Southern hybridization.

用BglII+SalI+PvuI三酶切pWBS和用BglII+BamHI双酶切pWCS，分别回收并纯化3.0kb的基因片段WAP-Bcl-2-SV40polyA和3.5kb的基因片段WAP-c-myc-SV40poly，作为目的基因，通过受精卵显微注射技术，分别导入C57BL／6J雌鼠与DBA／2J雄鼠交配的F1代小鼠受精卵的雄原核中，各注射约1000枚，将存活的受精卵各600枚分别移植至29只假孕母鼠输卵管壶腹部内。

Rabic vaccine is one of the earlest and the most successful vaccine used for human. It's development went through several stages: animal brain tissue live vaccine, inactivated vaccine, prima cells culture inactiveted vaccine and cells cullture purified vaccine. Rabic vaccine plays a positive role in that prevent and control rabic epidemic.

人用狂犬病疫苗是世界上最早研制成功和使用的疫苗之一，经历了用动物脑组织制备的活疫苗、灭活疫苗、原代细胞培养灭活疫苗和细胞培养精制纯化疫苗等几个阶段，它为人类防治和控制狂犬病的传播起了积极的作用。

There were no effect in general on viability of Trichogramma chilonis treated with 10,70,150 and 300 mGy 60 Co γ irradiation in eggs stage, but the 150 and 300 mGy irradiation treatment in pupae stage induced significantly alteration of sex ratio in favor of female adults in F 1 generation.

在卵期用 1 0、70、1 5 0和 30 0mGy60 Coγ射线处理，对赤眼蜂的生活力基本没有影响；而在蛹后期用 1 5 0mGy和 30 0mGy处理，导致了盟黄赤眼蜂F1代的雌雄比例显著提高。

Simulation experiments' data show that by using this methods it can precisely generate non Gaussian correlate random sequence with specified probability density and power spectrum,and reproduce verisimilarly the scatter coherent video signal of radar sea clutter containing both amplitude and phase.

其中迭代算法用来计算非线性变换过程中高斯序列相关性的变化，而随机向量法用来完成线性变换，仿真实验数据证明利用这种方法可精确地产生具有指定概率密度和功率谱的非高斯随机序列，逼真地复现既包含振幅又包含相位的雷达海杂波相干视频散射信号。

Activity of alkaline phosphatase and ability of formation for calcifying nodules were determined.

抽取健康成人骨髓组织，用Percoll分离液分离出骨髓中的单个核细胞，在含体积分数为10%小牛血清的高糖DMEM培养液中，置于37℃、含体积分数为5%的CO2湿化空气孵箱中培养，通过传代培养扩增骨髓基质干细胞，传三代时改用含地塞米松、β-甘油磷酸和维生素C的条件培养基培养，用倒置显微镜、HE染色观察增殖和分化情况，并测定碱性磷酸酶活性和钙结节形成能力。

Using computer to supervise archives not only economizes human labor , but also enhances efficiency , and it is the inevitable trend to automaticly manage people's information with computer .

用计算机管理人事档案，不但节省人力，提高工作效率，加速人事信息的流通，而且用计算机自动管理人事信息是对代发展的必然趋势。

However, this valorous visitation of a bygone vexation stands vivified and has vowed to vanquish these venal and virulent vermin vanguarding vice and vouchsafing the violently vicious and voracious violation of volition.

这是V首次出场救了Evey后向她作的自我介绍，V用带有戏剧色彩的演绎来介绍他自己是&一位谦虚的杂耍老手代苦难命运的受害者和加害者演出这个面孔，不只是虚华的外表它是遗存的人民呼声现已空洞消亡&V的介绍用了大量V字头单词组合成一段串词，里面简单提到自己的身世经历，受到命运的捉弄不得不戴上这个面具，而后又说到他出现的目的。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐