四元

At present, the bacteria invented by genetic engineering methods are E.coli KO11, K.oxytoca P2 and E.chrysanthemi which are capable of changing binary sugar and ternary sugar into alcohol (90％ of the theoretical change rate) and fermenting quarternary stachyose.

目前研究出的基因工程细菌有E.coli KO11、K.oxytoca P2和E.chrysanthemi，具有将二元糖和三元糖转化为乙醇的能力，接近理论转化率的90％，还能发酵四元水苏糖。

The SBS tetrabasic graft copolymerization was studied and effects of the monomer ratio,amount of AA and BPO,solidifying technology on adhesive properties were discussed,and the convenient adhesive with good properties for polyolefine was prepared.

研究了SBS四元接枝共聚反应，讨论了MMA/BA配比，AA和BPO用量、反应时间和反应温度及固化工艺对粘接性能的影响，并制得了性能优良、使用方便的聚烯烃用粘合剂。

The tetrabasic graft copolymer was prepared on chloroprene rubber initiated by benzoyl peroxide,with styrene,methyl methacrylate and acrylic acidas graft monomers by tetrabasic graft copolymerization.

以苯乙烯、甲基丙烯酸甲酯、丙烯酸为接枝单体，以过氧化二苯甲酰为引发剂，在氯丁橡胶上进行接枝共聚，制备出CR/St/MMA/AA四元接枝共聚物。

The bisubistituted straight-chain and tetrasubstituted ester molecules have symmetrical structures.

二元直链和四元硝酸酯具有对称的分子构型。

Soil water content in fenced undegraded meadow is greater than that of artificial pasture.

合并数据的四元线性回归方程中有人口数量和牲畜数量两人为因子，年蒸发量和年平均风速两个自然因子。

Undoped ZnO and LixMg0.2Zn0.8-xO quaternary alloy thin films were prepared on the ordinary glass by sol-gel method.

采用Sol-gel法在普通载玻片上制备了纯ZnO薄膜和LixMg0.2Zn0.8-xO四元合金薄膜。

Quaternions are a compact, unintuitive way of representing rotations.

四元数是表现旋转的结实的、非直观的方法。

It includes two co-satured points, five univariant curves and four crystallization regions corresponding to NaCl,〓,〓, and 〓. It is important to investigate the phase diagrams for designing and optimizing the preparing process of the PSC adduct.

该四元体系及其三元子体系的相平衡研究，为Na〓SO〓制备〓合成工艺条件的确定和产物的分离提供了相平衡理论依据，为硫酸钠资源的综合利用提供了新的思路，具有重要的实用价值和学术意义。

The experimental results showed that the double salt Na2SO4·MgSO4·4H2O forms in the quaternary system Na+,Mg2+//SO42-,B4O72--H2O at 288K. The quaternary system has three invariant points F1,F2, and F3, seven univariant curves E1-F1,E2-F1,E4-F3,E5-F3,E3-F2,F1-F2,F2-F3, and five fields of crystallization [Na2SO4·MgSO4·4H2O,Na2B4O7·10H2O,Na2SO4·10H2O, MgSO4·7H2O,MgB4O7·9H2O].

研究结果表明：交互四元体系Na+，Mg2+//SO42-，B4O72--H2O 288K时的相平衡实验中，有复盐Na2SO4·MgSO4·4H2O生成，平衡相图中有3个共饱点，7条单变量曲线，5个结晶区，对应的平衡固相分别为Na2B4O7·10H2O，MgB4O7·9H2O，Na2SO4·10H2O， MgSO4·7H2O和Na2SO4·MgSO4·4H2O。

These two reactions that give different four-memabered heterocyclic products; both proceed;via a two-step mechanism involving a zwitterionic intermediate.

结果表明，这两个生成不同四元杂环产物的平行反应均为有一两性离子中间体的分步反应。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。