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It is important for the application of formal approach and formal specification in all stages of software development to study and design automatic refinement from Z to high-levellanguage: Insure complete formalization in all stages of software development; Avoid antilogy in refinement due to mistaken operation or computative mistake and insure consistency and integrity of system; Due to avoiding manual operation in refinement process, it is feasible to bulid a compile environment that Z specification automatic refine and form high-level programme, this will accelerate the promotion and application of Z in industry.

Z到高级语言自动求精的研究与设计对于形式化方法及形式规格说明应用于软件开发的各个阶段具有非常重要的意义：确保了从需求分析阶段开始的软件开发周期的完全形式化；避免了人工的误操作或演算错误导致的求精前后不一致，保证了系统的一致性和完整性；由于求精过程避免了手工操作，因而Z规格说明自动精化为程序代码的编译环境可以建立，这将会加速Z规格说明在工业界的推广应用。

Ldquo; Dacheng Textile Machinery Technology Center ", in high - starting point FB473A introduced roving machine, FB / FB L314 ~ 455 gill box, FB 256 Comber three wool, hemp products, more than 20 varieties, is widely used in hair, linen spinning industry, the system be combing combing and rehabilitation works, to fill the blank of domestic products, and achieved the results of a number of patents being granted higher levels of government,"star enterprise title.

ldquo；大成纺机技术中心"，在高起点上，推出了FB473A粗纱机、FB/FBL314～455针梳机、FB256精梳机等三大毛、麻系列产品，品种20多个，广泛应用于毛、麻纺业的前纺、制条、精梳和复精梳工程，填补了国内产品空白，取得多项专利成果，被上级政府授予"明星企业称号。

The role of nicotine smokers breathe in the production of sperm in the seminiferous tubules of spermatogenic epithelium to spermatogenic dysfunction, which produced a decrease in the number of sperm quality lower.

吸烟者吸入尼古丁作用于生产精子的曲细精管的生精上皮，使其生精功能减退，因而生产出来的精子数目减少，质量降低。

Bax protein was expressed mainly in spermatogoni and primary spermatocytes, and sometimes the expression was also seen in spermatids and spermatozoa within some seminiferous tubules.

Bax蛋白主要表达于精原细胞和初级精母细胞，部分曲细精管中的精子细胞和精子也有表达。

Sinensis could be divided into 5 stages, includi ng t he spermospore proliferation stage, the primary spermatocyte stage, the secondar y spermatocyte stage, the spermateliosis stage and the spermiotiliosis stage.

在整个精子发生过程中，N-乙酰半乳糖复合物出现于精原细胞期，并于精母细胞期发生明显的修饰和变化，精子形成期和成熟期没有N-乙酰半乳糖复合物的表达。

Wear resistance less than YG3X only,sensitive to impact and vibration.Used for continuous semifinish turning of cast iron,nonferrous metals and their alloys and for finish turning.

耐磨性仅次于YG3X，对冲击和振动较敏感，适用于铸铁、有色金属及其它合金连续切削时的精车、半精车、精车螺纹与扩孔。

They can reach 72.04% and 84.5% separately(P.05). 2. The methods such as Percoll uncontinuous density gradient centrifugation, isolation according to the different adhesiveness can be used to isolate and purify rabbit SSC effectively. Spermatogonia mainly distribute between the gradient 27% to 35%(density between 1.0410g/ml to 1.0508g/ml).

Percoll 不连续密度梯度离心和差异粘附等方法可以有效的对兔精原细胞进行分离纯化，其中精原细胞主要分布于密度梯度为27%-35%(密度 1.0410g/ml~1.0508g/ml)的带间，此带中精原细胞的纯度平均达到 60.42%(P.01)。

Ldquo; Dacheng Textile Machinery Technology Center ", in high - starting point FB473A introduced roving machine, FB / FB L314 ~ 455 gill box, FB 256 Comber three wool, hemp products, more than 20 varieties, is widely used in hair, linen spinning industry, the system be combing combing and rehabilitation works, to fill the blank of domestic products, and achieved the results of a number of patents being granted higher levels of government,"star enterprise title.

ldquo；大成纺机技术中心&，在高起点上，推出了FB473A粗纱机、FB/FBL314～455针梳机、FB256精梳机等三大毛、麻系列产品，品种20多个，广泛应用于毛、麻纺业的前纺、制条、精梳和复精梳工程，填补了国内产品空白，取得多项专利成果，被上级政府授予&明星企业称号。

The kidney department health recuperation volatile oil includes the pure plant volatile oil ingredient, in addition the SPA teacher's specialized technique carries on the recuperation maintenance to the kidney department, the unblock correspondence channels and collaterals, lets effective volatile oil member rapid permeating in vivo, strengthens the kidney waist area with other internal organs' coordinated ability, adjusts the kidney function comprehensively.

肾部健康调理精油含有有效的精纯植物精油成分，加上美体师专业的保养手法对肾部进行调理性保养，疏通对应经络，让有效精油分子迅速渗入体内，循行于人体经络中，加强肾腰区与其它内脏的协调能力，全面调节肾功能。

We believe inthe managerial theory win the market by our excellent quality enjoy the confidence of the cusromer by our goodreputation thanks to which we gain our customers all over world Now our conpany has more than 1000 series of producrs amongwhich cold press terminals sleeves wire bounds connectors are four partners of auto industry others are widely used in air-conditioners refrigerators washing machines and other home electric appliances .

我们信奉&凭质优决胜于市场，以精诚取信于客户&的经营理念，也正是凭优质和精诚，我们招来八方顾客。公司现有1000多个品种，冷压接线端子、护套、线束、连接器、四大系列是汽车工业的好伙伴。广泛应用于空调、冰箱、洗衣机等家用电器。

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。