精于...的

They all like steetcars running contentedly on their rails,and they dispise the sprightly flivver that dashes in and out of the traffic and speeds so jauntily across the open contry.

他们就象街上的有轨电车，精准地在固定的轨道运行，而对那些不时出没于车水马龙和欢快的奔驰在乡间的廉价小汽车不屑一顾。

This article systematicaly introduced the physical and chemistry properties,the methods to extraction,physiological efficiency of limonene and it s application in food,flavor and medical industry.

苧烯是一种天然的活性单萜，广泛存在于柑橘类植物精油中。苧烯具有多种生理作用，特别是有很好的抗癌活性，是一种潜在的功能性添加剂。系统地介绍了苧烯的理化性质、提取方法、生理功效及其在食品、香料、医药中的应用

This kind of structure of micropyle has been proved by computer simulation to be favourable for the sperm to agglutinate and enter the micropyle. So, another kind of teleost is found after Misgurnus anguilicaudatus, in which exist unnegligible mechanical dynamic factors besides the chemical one during the sperm entry into the micropyle.

通过电子计算机模拟，验证了卵膜孔的这种结构，为精子的云集和进入精孔管所提供的有利条件，从而，于泥鳅之后又发现了一种真骨鱼，其精子入卵除化学因素外，还存在着不容忽视的机械动力因素。

The spiny eel , belonging to Perciformes, Osteichthyes, is a kind of little freshwater fish distributed in Southern China. In 1998, Our lab detected XX/XY differentiated sex chromosomes in this specie with karyotypic analysis, and then with chromosomal binding and SC observation, we identified that its two largest metacentric chromosomes were X, Y sex chromosomes in 1999. X, Y chromosomes differ each other not only in the distribution of heterochromatin but also in their shapes, which make them could be recognized directly under the light-microscope without any banding treatment.

刺鳅，属鲈形目、刺鳅科(Perciformes，Mastacembelidae)，是广泛分布于中国南方的小型淡水鱼类。1998年，我室通过核型分析，首次发现该物种具有明显分化的异形性染色体，其性别决定类型为XX／XY型。1999年，本室通过染色体显带、精母细胞联会复合体观察，再次确认刺鳅染色体组中最大的一对中部着丝粒染色体为X、Y性染色体，两者不仅已经出现结构异染色质分布上的不同，同时在外部形态上也存在明显差异，识别特征鲜明，在光镜观察下无需显带即能清晰辨认性染色体。

Under strict quality control of CQC, kaina lead-free solder is used in high-purity refined tin and advanced smelting technology, a unique anti-oxidant formula alloy, its taphole amount is very small, bright solder joints, reliable, good wetting, it is suitable in lead-free wave soldering and hot dip soldering

在CQC严密的质量监控下，凯纳无铅焊锡条采用高纯度精锡及先进的熔炼工艺，独特的抗氧化合金配方，其出渣量极少，焊点光亮、可靠，湿润性好，适用于无铅波峰焊和热浸焊。本企业供应58℃～145℃不同熔点温度的无铅低温焊锡条。

Aiming at T-base diamond lathe, author use both on-line and off-line to measure the error vector of lathe workspace, and acquire good network train samples, then build two-dimensional error compensation model of lathe workspace with BP neural network and fuzzy neural network, at last build contour error compensation control system.

在分析国内外数控机床伺服闭环系统的发展现状及局限性的基础上，利用原数控系统和所研制的二维压电陶瓷微动刀架，研制了独立于原数控系统的超精密闭环控制系统。

WE stick to "basing on persons, being sincere first" and" products present personality "and" quality first" welcome to join us and be part of us we hope our future will barer with our sincere cooperate.

伟力企业力尽焕发人的最高品位，一贯遵循&以人为本，商以诚为先；的人本理念，并以&产品体现人格&质量重于生命&的身价品位，承偌伟力人的真诚奉献，恭候代理商的加盟，原我们精诚合作，共谋共策，推波助澜。

Since 2002, Chan ventured into the new arena of fine arts. Three pieces of his creations were exhibited in May at Art Chicago 2002, one of the largest international art exhibitions in America, upon the invitation of Art Beatus gallery in Hong Kong. In June of the same year, his work was shown again at Art Basel in Switzerland.

自二零零二年起，陈幼坚不断在创作领域上作出新的尝试，从纯粹的商业平面设计走向艺术领域，其三幅最新艺术作品（照片拼贴画及装置艺术品），应香港精艺轩画廊之邀，参加于五月份在美国芝加哥举办的「二零零二芝加哥艺术展」，该展览是美洲最具规模的国际艺术展览。

Results The expression of the Mahoganoid protein and its mRNA was showed by brown staining and observed in the Leydig cells, spermatogonia, primary spermatocytes, spermatids, Sertoli cells, and peritubular myoid cells of testicular tissues and principal cells, basic cells and epithelial cells of epididymal tissues.

结果1。免疫组化法检测Mahoganoid蛋白的实验结果显示的棕色阳性信号可见于各天龄段大鼠睾丸的生精细胞、支持细胞、间质细胞和管周肌样细胞以及附睾输出管的高柱状、低柱状上皮细胞和附睾管的上皮细胞、主细胞、基细胞。其中Mahoganoid蛋白主要表达于胞膜和胞浆。

It abandon the traditional measure that divide the development course of the scientific and technological park according to the time, and redistrict their development courses according to the logic route that the park grew up, then divide development course into three stages: embryonic stage, it introduce domestic and international agricultural new and high technology , advanced equipment directly, engaged in running an enterprise on a commercial way, use the new and high technology to carry on precise, deep processing or storing and keeping fresh to the high-quality agricultural and animal products, do not have cooperation with local peasant basically; the stage of growing up, the park brings along local peasants production, does not confine to the production of the industrial base in the park again, a kind of nonstandard cooperative form has appeared between peasant and park; at ripe stage, the park sets up the training center of agricultural science and technology, carry on the professional technical training to the industrial base and peripheral peasant, spread through three kinds of diffusion effects, such as radiation, the grade

摒弃了按时间划分科技园区发展历程的传统作法，按照园区成长的逻辑路线对其发展历程进行了重新划分，将发展历程分为三个阶段：萌芽阶段，园区内直接引进国内外农业高新技术、先进设备，从事企业化生产，运用高新技术对优质农畜产品进行精、深加工或储藏保鲜，与当地农户基本上没有合作关系；成长阶段，园区带动当地农产生产，不再局限于园区內产业基地的生产，农产与园区之间出现了一种不规范的合作形式；成熟阶段，园区建立农业科技培训中心，对产业基地及周边农产进行专业技术培训，通过辐射扩散、等级扩散、跳跃扩散三种扩散效应，把经济动力和创新成果传导给周围地区，园区进入规范化管理阶段。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。