查询词典 at present

In addition, using RT-PCR to detect expression of centrin homogene during Urechis unicinctus spermatid deferentiation and early embryonic development. The result revealed that (1) expression of HsCEN1 homogene is present during spermatid defferentiation including spermtid and sperm, but not in adult tissues including body wall tissue,intestinal mucous memberane cells and cell in coelom succus;(2) expression of HsCEN1 homogene is not present in unfertilized oocytes but present in that of released polar bodies after fertilization and parthenogenesis oocytes treated with A23187;(3) expression of HsCEN1 homogene is present during early embryonic development including two-cell stage,multicell stage,gastrula to trochophora.

我们还用RT-PCR方法检测了Centrin同源基因在单环刺螠精子分化过程和早期胚胎发育过程的表达，结果显示：在单环刺螠精子发生过程中的精细胞、精子团、精子中都有表达，而在成体的体壁组织、消化道组织、体腔球中则没有表达；在未受精卵中没有表达，而在受精后释放极体的受精卵和经A23187孤雌激活的卵中则有表达；在单环刺螠的早期发育过程——二细胞胚胎、多细胞胚胎、原肠胚、早期担轮幼虫——中都有表达。

The author firstly combs the teachers sources of Shuyuan in Ming and Qing dynasties, points out that there are four main sources for it, and concludes that making full use of social resources is a valid path to solve the problem of teachers sources then.Secondly, the present research consults Shuyuan teachers employment way in Ming and Qing dynasties, combs its three ways and deeply inquires into the subjective and objective condition for them.Thirdly, the present research analyses Shuyuan teaching characteristics, management and promotion, sums up seven main teaching characteristics and analyses the advantage and disadvantage of them,Further more , the present research consults Shuyuan teachers management and promotion, makes an analysis on its historic courses why it"s informal.Finally, the present research analyses the Shuyuan teachers" economic treatment, social status and the influence and effect made to the politics, economy, military, social life and cultural education where they were situated in Ming and Qing dynasties, and concludes that the Shuyuan teachers in Ming and Qing dynasties actively participated in the local social activities in their peculiar upper class gentlemanship and greatly influenced and promoted the policy making and carrying out of the local public affairs, meanwhile, they promoted the communication and development of local learning and culture , and trained quite many men for profession for the locals.

作者首先对明清时期书院教师的来源进行了梳理，指出了明清书院教师的四种主要来源，认为充分利用社会资源是明清书院解决教师来源的有效途径；其次，对明清时期书院教师的聘用方式进行了历史考察，梳理出明清时期书院存在着三种教师聘用方式，深入探讨了这三种方式并存的主客观条件；再次，对明清时期书院教师的教学特点进行了分析，归纳出七个主要教学特点，并说明其利弊；此外，探讨了明清时期书院教师的管理及升迁问题，分析了其存在的不规范性的历史原因；最后，剖析了明清时期书院教师的经济待遇、社会地位及对书院所在地的政治、经济、军事及社会生活与文化教育所可能产生的作用与影响，得出明清书院教师以自己特有的上层绅士身份与地位积极地参与到当地社会生活之中，并在相当程度上影响与促进了地方公共事务的决策与实施；同时，他们促进了当地学术及文化的交流与发展，为当地培养出了大批的杰出人才。

This thesis has carried on the investigation to the new curriculum standard of present situation Junior middle school Chinese reading teaching, including two aspects: The first is the present situation investigation of reading main body students' reading, because students' reading present situation supports powerfully reading educational reform and thorough research; The second is present situation investigation of the class reading teaching, because the class is the battle position of promoting the students' reading ability, It is also the principal direction of reading teaching reform and the research.

本论文对新课程标准实施以来的初中语文阅读教学现状进行调查，包括两个方面：一是作为阅读主体的学生的阅读现状的调查，因为学生的阅读现状有力的支撑阅读教学改革与研究的深入；二是课堂阅读教学现状的调查，因为课堂是学生阅读能力提升的主阵地，也是阅读教学改革与研究的主方向。

Via analyzes the present gateway s operating data at dissimilar parameter based queuing theory, Markoff process, embedded Markoff linker, the present thesis describes the problem that the present gateway has worse real time response when there are too much TCP sockets, the trait of the present gateway.

并运用排队论、马尔科夫过程及嵌入马尔科夫链分析了现存网关模型的各种运行参数，得到其特点以及在TCP连接过多的时候所存在实时性下降的问题。

Promotion rule:every purchases Hettich hinges(SKU:509631)full 20 pes present 10 pes,full 40 pes present 20 pes,full 60pes present 30 pes,full 80 pes present 40pes,to this analogizes,above the condition does not bestow.

促销规则：凡壹次性购买海蒂诗铰链（SKU：509631）满20只送10只，满40只送20只，满60只送30只，满80只送40只，以此类推；不符以上条件均不赠送。

This article mainly introduced the city guard rail sweeps clear the vehicle in the development present situation and the present technology insufficiency, has analyzed the domestic formation product technical characteristic and the good and bad points, obtains the present water spray vehicle chassis situation through the contrast, then chooses this design through the analysis comparison each kind of plan, for instance said obtains the hydraulic transmission through the crosswise comparison to teach the mechanical drive the merit, then the further showing hydraulic transmission plan arrangement, obtains the entire wrap equipment on vehicle scheme of arrangement through the analogy, but also absorbs a present more advanced position to correct an error the system.

购买设计，请点击这里和我们直接沟通 QQ：95343510摘要：本文主要介绍了城市护栏清扫车的发展现状和目前技术上的不足，分析了国内成型产品的技术特点和优缺点，通过对比得到目前洒水车的底盘情况，然后通过分析比较选择该设计的各种方案，比如说通过横向比较得出液压传动教机械传动的优点，然后更进一步说明液压传动的方案布置，通过类比得出整套装置在车上的布置方案，还吸收了目前较为先进的位置纠偏系统。

This article tries to China sea fishery economic development present situation to make the trifle analysis, during emphasis present fishing politics management's important, carries on the diagnosis to the Jiangsu sea fishing politics management present situation, and on the present existence's question proposed that certain improvement's suggestion, hoped can in provide the model in the future for our province fishing politics supervisory work.

本文试对中国海洋渔业经济发展的现状作些许分析，在强调目前渔政管理的重要性的同时，对江苏海洋渔政管理现状进行调查分析，并就目前存在的问题提出若干改进的建议，希望能在日后为我省的渔政管理工作提供借鉴。

After confirming the pricing mode basically, the author analyze three effective operating forms in pricing combining China's objective current situation at present. The forms are the hearing, competing price in advance and getting involved afterwards. Then the author present the operating forms suitable for the present demand for development. So the theory of pricing in public-private partnership has been perfected on the system aspect and operation aspect. At last, the author presents the conditions that can optimize the pricing in public-private partnership of quasi-public utilities.

定价模式基本确认后，结合中国目前的客观现状对政府产生价格的三种有效操作形式，听证会、事前竞价、事后介入进行分析，提出适合当前发展要求的操作形式，使准市政公共产品民营化定价理论在制度层面和操作层面上得以完善，最后，提出优化准市政公共产品民营化定价的条件。

The main achievement is as following: Present a new software structure with insert mode based on diagram and data platform. With this structure the software can be used in various voltage levels of power networks by switching function groupware with corresponding edition. Therefore it is important to solve software universality and developability.(2) Present a new idea that any operating condition is combination of running mode of plant or station, power supply topological and rules of equipment maintenance. This idea is very useful at simplifying setup and choice of operating conditions and ensuring calculation result correction.(3) Present a new idea of protection setting examination and rectification. Protection setting examination is used to examine the selectivity、 sensitivity and speed under certain operating condition, and pass an opinion whether these settings are wrong;Setting rectification is used to calculate new relay settings when error is found in setting examination.(4) Point out that interaction design is the key step in developing power system application software,which can secure usability.

主要成果有：(1)提出了以图形/数据平台为基础的插件式软件结构，通过配置不同版本的功能插件即可应用于不同特点的电网，对解决软件的通用性和可发展性具有重要意义；(2)提出了基于厂站方式、供电方式和检修规律相组合的运行方式分解方法，它能有效提高运行方式选择的合理性与全面性，使定值计算的正确性得到保障；(3)提出了保护定值校正的思想并进行了软件实现，它能检测当前保护定值在选择性、灵敏性、快速性等方面是否适合当前的运行方式，并对不正确的定值进行纠正；(4)指出交互设计应作为电力系统应用软件开发中的一个关键步骤，目的是保证软件的可用性，并对软件开发的过程进行了总结，提出了许多有益的实践经验。

It is reported that after the female enters the menopause, because the ovarian function starts to decline, the secretion female, the progestogen reduced, causes the skin to have a series of changes, like some person skin elastic fibers thinning, easy to break; Some person hair becomes withered, easy to lose hair; Some people present the fixed spot or the whole body skin pruritus; Some people have the dermal sensation to be unusual, like the numbness, the needle grip or creeps; Some people present the mucous membrane to be dry, the eye is colored in the very short time endomorphism, has the dust or the sense at present; Some person nasal cavity, the oral cavity mucous membrane withers, the mouth does frequently, always wants to drink water; Some person vagina mucous membrane withers, the secretion reduces, affects the sex life quality.

据介绍，女性进入更年期后，由于卵巢功能开始衰退，分泌的雌、孕激素减少，导致皮肤产生了一系列的变化，如有的人皮肤弹力纤维变细，易断裂；有的人头发变得干枯、容易脱发；有的人出现固定部位或周身皮肤瘙痒；有的人出现皮肤感觉异常，如麻木感、针扎或蚁行感；有的人出现黏膜干燥，眼睛在很短的时间内变花，眼前有灰尘或异物感；有的人鼻腔、口腔黏膜萎缩，经常口干，总想喝水；有的人阴道黏膜萎缩，分泌物减少，影响性生活质量。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。