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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。

Compared with classical cytotoxic T lymphocytes , NK cells are superior in the following aspects: NK cells are among the first cell types to be activated after intracellular pathogen stimuli, the activity of NK cells peaked between 1 to 3 days, retained during the first 7-10 days, and the T cells response emerged only after 7 days when the NK cell responses begin to decline; though comprising of only 10％-15％ of peripheral lymphocytes, NK cells mobilize most of the cell populations in a strong and high level response to different invasions, and act as key factors at early defense before a specific immune response could mount, while only certain clones were involved in T cell response; NK cells kill virus-infected or malignant transformed cells without pre-sensitization and without restriction by major histocompatibility antigen, which is usually a mechanism of immune escape to T cell recognition by virus-infected or tumor cells, thus NK cell in complementary with T cells play crucial roles in tumor and virus eradication.

NK细胞以其强大的细胞毒活性为特征，与细胞毒性T细胞相比，NK细胞具有如下特点：NK细胞虽然只占外周血淋巴细胞的10-15％，但是对刺激性因素产生应答的过程十分迅速，一次可以调动大多数细胞共同参与，而不是几个克隆的活化，免疫应答的强度高；病毒感染或恶性转化细胞的一个主要特征是细胞表达的MHCⅠ类分子下降或消失，并借助这一机制逃避特异性T细胞应答的识别，NK细胞介导的杀伤活性无需抗原刺激，不受MHCⅠ分子表达的限制，从而与T细胞应答互为补充发挥免疫防御的功能；NK细胞的免疫活性可以被多种细胞因子上调，其中IFNα，IL-2，IL-12，IL-15和IL-18具备更强的作用；NK细胞具有强大的细胞因子分泌功能，对于启动T细胞特异性应答必不可少。

To forestall any attempts at exegesis('Author, Citing Dadaism's Erstwhile Esotericism, Opposes Present-Day "Mamaist" Obfuscations'), I confess that as a title it means nothing at all; but then the very concept of meaning is now outdated, nerdy, pre-ironic.

作者标榜了达达主义，并对古老的奥秘进行了无限的憧憬和展望；而对现在仍然存在的只是"模糊不清而无任何实质意义的玛玛主义"进行了不懈的抨击。

To forestall any attempts at exegesis ('Author, Citing Dadaism's Erstwhile Esotericism, Opposes Present-Day "Mamaist" Obfuscations'), I confess that as a title it means nothing at all; but then the very concept of meaning is now outdated, nerdy, pre-ironic.

为了免去注释的麻烦（作者，引用达达主义的早期深奥主义，与现在的实际主义者的困惑相反），我承认，作为题目它毫无意义；不过，"意义"的概念如今已是过时、卑微、且极具讽刺的。

Also still undecided is the importance and influence of Essenism within pre-AD 70 Judaism and early Christianity.

也仍然是未定的重要性和影响力Essenism内预先公元70犹太教和早期基督教。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。