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In order to investigate the electrotransformation condition of Sinorhizobium meliloti variable curve was devised by different cell cycles time,resuscitative buffer,electrotransfection buffer,pulsed electric field and resistance.

为了研究苜蓿中华根瘤菌电转化的条件，通过对不同的细胞生长周期、复苏缓冲液、电转缓冲液、电场强度和电阻对电转率影响程度来作出变化曲线，以确定电转化的最优条件，从而提高苜蓿中华根瘤菌电转化率。

AbstractBased on the character of T/P satellite altimetry return waveform, we present a method to retrack the waveform data and determine the retracking correction with function approach, then improve the precision of altimeter observations in offshore.?For the South China Sea region,?we have processed four cycles T/P altimeter waveform data.

根据测高卫星返回波形的特征，给出了由Topex/Poseidon卫星波形数据进行波形重构的方法，并采用函数逼近算法确定波形重构改正量，进而改善测高卫星近海岸海面高观测值的精度。

Rhyolitic volcanic rocks are generally characterized by rich alkali, silicon, aluminum,and poor calcium, magnesium. They have relatively high Rb,Th and rather low Ba,Sr,Ti,P,and exhibit obviouslv negative europium anomaly (δEu=0.16~0.44).The εNd values of the rhyolitic volcanic rocks range from -5.93 to -2022.Basalts and rhyolites in different cycles show clear geochemical variance.

流纹质岩石总体具富碱、富硅、富铝，贫钙、贫镁特征，其Rb、Th等元素的含量较高，而Ba、Sr、Ti、P等元素含量则明显偏低，并具显著的铕负异常（εEu=0.16'0.44），岩石的εNd值变化于-5.93~~-2.22.I、II旋回玄武岩和流纹岩在地球化学特征上均具明显变异。

On generator working condition,e xperimental cycles are made on NO x em is sion from a 4135G diesel engine by changin g injection timing and compression ratio , based on technical code on emission of m a rine diesel engine drawm up by Internati onal Maritime Organization.

在保证柴油机的经济性前提下，寻找降低柴油机NOx 排放率的途径，根据IMO《船用柴油发动机氮氧化物释放控制技术规则》推荐的试验程序，对一台 4 135G柴油机在发电机工况下进行改变喷油正时和压缩比的试验研究。

At last ,this pater prove that the Coxeter mat rix of A has a composition of the fundamental reflections with the condition that Q has no oriented cycles.

然后利用A 的Cartan 矩阵和对称双线性型定义了A 的基本反射，并利用数学归纳法证明了在Q 无有向圈的条件下， A 的Coxeter 矩阵可分解为基本反射的乘积。

Numatics' Heavy Duty G Series Rodless Cylinder incorporates an NSK bearing rail and bearing sliders for incredible load carrying capabilities with the field-proven S1 Series rodless cylinder delivering millions of reliable cycles.

纽曼帝克'重型 G系列无杆气缸采用了NSK轴承的铁路难以置信携带的现场验证S1系列无杆气缸能力，提供可靠的周期数百万负荷，轴承滑块。

Result In the Identification of ISSR molecular markers, 3 primers in 20 of being chose had better amplification effect. Optimization results representative of C. grandis Osbeck showed that primers 826 for the optimum temperature of Rutaceae plants amplification was 52.0℃, and the best cycle time was 35 cycles.

结果］选用的20个引物中有3种引物扩增效果较好，以柚为代表的优化结果表明，引物826对芸香科植物扩增的最适退火温度为52.0℃，最佳循环次数为35个循环。

Methods: Ninety infertility patients with the only cause of salpingemphraxis undergoing IVF-ET cycles were randomly divided into 2 groups, and received either urinary FSH or recombinant, in combination with long GnRH-a protocol to induce ovulation.

对单纯输卵管性因素行IVF-ET 90例患者，随机分为两组。

ABSTRACT: Shallowing-upward carbonate cycles in the~2650 Ma Cheshire Formation, Belingwe greenstone belt, closely re- semble their Proterozoic and Phanerozoic counterparts.

问题补充：在津巴布韦贝林圭绿石带的26.5亿年的Cheshire组中向上变浅的碳酸盐旋回极相似于元古代和显生代的碳酸盐旋回。

This spring he will sing one of his signature roles, Siegmund in Wagner's "Walkure," in two of the three complete "Ring" cycles at the Met .

今春，他将唱他的招牌角色之一、华格纳「女武神」中的齐格蒙，在大都会三全套华格纳「指环」连环剧中演出两套。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。