查询词典 pre-existence

It's the most enigmatic pre-historic monument on earth.

资讯科技是在地球上的最谜前历史性的纪念碑。

Result Based on directly regenerated plant of in vitro plant of Xinjiang cotton, the cotton epicotyl treated by pre-culture for 3-5 d was immersed in bacteria for 15 min and co-cultured for 2 d. Cephalothin at 100 mg/L was used to inhibit bacteria after 50 mg/L kan selection. And the combination of cytokinin with relatively high content and auxin with low content was used in its directly budding culture to obtain resistant seedlings.

结果］在新疆棉花离体培养植株直接再生植株基础上，经3~5d预培养处理过的棉花上胚轴，在浸菌15 min共培养2 d后，经50 mg/L kan筛选，用1000 mg/L头孢霉素抑菌，并用相对高含量细胞分裂素和低含量生长素的组合对其进行直接出芽培养，从而获得抗性小苗。

ResultBased on directly regenerated plant of in vitro plant of Xinjiang cotton,the cotton epicotyl treated by pre-culture for 3-5d was immersed in bacteria for 15min and co-cultured for 2d.Cephalothin at 1000mg/L was used to inhibit bacteria after 50mg/L kanselection.And the combination of cytokinin with relatively high content and auxin with lowcontent was used in its directly budding culture to obtain resistant seedlings.

结果在新疆棉花离体培养植株直接再生植株基础上，经3～5d预培养处理过的棉花上胚轴，在浸菌15min共培养2d后，经50mg/Lkan筛选，用1000mg/L头孢霉素抑菌，并用相对高含量细胞分裂素和低含量生长素的组合对其进行直接出芽培养，从而获得抗性小苗。

With the competent germinating epicotyl of cotton as receptor in exogenous gene transformation, NPTII (neomycin phosphotransferase Ⅱ) gene carrying selection marker and GFP reporter gene were mediated into cotton by agrobacterium-mediated transformation. The pre-culture time, bacterial-immersing time, co-culture time and antibiotics concn., etc of using agrobacterium-mediated transformation in the transformation of competent germinating epicotyl of cotton were studied.

方法］以棉花感受态萌动的上胚轴作为外源基因转化的受体，用农杆菌介导法将携带有筛选标记NPTII基因及GFP报告基因导入棉花，研究了农杆菌介导法用于棉花感受态萌动上胚轴转化的预培养时间，浸菌时间，共培养时间及抗生素处理浓度等。

MethodWiththe competent germinating epicotyl of cotton as receptor in exogenous gene transformation,NPTIIgene carrying selection marker and GFPreporter gene were mediated into cotton by agrobacterium-mediated transformation.The pre-culture time,bacterial-i mmersing ti me,co-culture ti me and antibiotics concn.,etc of using agrobacterium-mediated transformationinthe transformation of competent germinating epicotyl of cotton were studied.

方法以棉花感受态萌动的上胚轴作为外源基因转化的受体，用农杆菌介导法将携带有筛选标记NPTII基因及GFP报告基因导入棉花，研究了农杆菌介导法用于棉花感受态萌动上胚轴转化的预培养时间，浸菌时间，共培养时间及抗生素处理浓度等。

Pre-school children in common the phenomenon of epistaxis.

在学龄前的幼儿常见鼻出血的现象。

In view of the rheological property of the heavy oil in Bo-hai field, this paper deduces the multilateral wells'production model of Non-Newtonian Bingham fluid with equiangular transformation method. In view of the multilateral wells Bo-hai, the paper analyses the multilateral wells'capitalized cost composition, including pre-drilling engineering, drilling engineering, completion engineering and production engineering. It also constructs the multilateral wells'economic benefit models basing on net present value, inner rate of return and payback period.

针对我国渤海油田稠油的流变特性，运用保角变换方法，推导了非牛顿Bingham流体的分支水平井产能模型；针对渤海油田的分支井，从钻前工程、钻井工程、完井工程、采油工程等方面对分支井的投资成本费用构成进行了具体分析；最后以净现值、内部收益率、投资回收期经济评价指标为基础，建立了海上分支井经济效益模型，并根据所建模型应用VB。

Based on node isolation principle, it adopts pre-emphasize techn i que to equilibrate the EDFA output power of all signal channels.

它以节 点孤立原则为基础，采用预均衡技术对经EDFA放大后的所有光信道功率均衡。

For many years, I used Longgupo to promote this pre-erectus origin for H. erectus finds in Asia.

多年来，对于亚洲发现的直立人化石，我都利用龙骨坡的材料倡导这种"前直立人"起源说。

Parents and pre-school children have a more positive interaction when sharing a reading experience with a traditional book as opposed to an electronic book or e-book, according researchers at Temple University's Infant Laboratory and Erikson Institute in Chicago.

家长和学前儿童有更积极的互动交流时的阅读经验，以传统的图书作为反对一项电子图书或电子图书，根据研究人员在坦普尔大学的婴儿实验室和艾里克森学会在芝加哥。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。