控制限度

We find there are two kinds of system -thecentralism and the decentralism, the decentralism is not better than thecentralism, absolutely, they should learn from each other ; In each country, the central government plays a important role in higher education curriculum management,but also has its limitation, the professional faculty have the most responsibility in the detail matter of higher education curriculum management; The higher education curriculum management system has its historical and adopted foundation, the reform must be kept fit with the situation of the country.

发现主要有中央集权和地方分权体制模式，地方分权制并不必然优于中央集权制，而是互为补充；各国的中央政府都在高校课程管理中扮演着重要的角色，但政府的控制是有限度的；高校课程管理的具体事务中，教师等专业人员的决定权较大；课程管理体是在历史与移植的基础上形成的，对其进行改革必须符合本国国情。

The design includes many new technologies in data exchange and data security, they are: Converting non-XML data to XML in order to apply the XML security technology to more data types; Using the technology of XKMS and PKI to manage the public key in order to overcome the shortage of complexity and difficulty in using PKI and improve the efficiency of the public key management; Using Diffe-Hellman algorithm combining with the public key technology to exchange secret key in order to furthest increase the security of the key; Using the technology of XML digital signature algorithm to ensure the integrity, message authentication and signer authentication of the data; Using the technology of XML encryption to ensure confidentiality of the data; Defining delegable access rules on the structure and content of the XML documents to provide fine-grained access control. According to the XML security framework, a XML security library is designed and implemented.

在对XML及其安全技术主要包括XML加密技术、XML数字签名、公钥管理、密钥产生和交换进行研究的基础上，结合传统密码技术和XML安全技术提出了一种基于XML的数据安全模型，模型中包含了目前网络数据交换和安全领域的一系列最新技术，主要有：将非XML格式数据转换为XML格式数据的方法，以保证现有的大部分网络数据能够应用XML安全技术；使用XML公钥管理技术结合PKI技术管理公钥，以克服PKI技术实施和部署复杂、难度大等问题，提高公钥管理的效率；使用Diffie-Hellman算法结合公钥技术交换密钥，以最大限度保证密钥的安全；使用XML数字签名技术保证数据的完整性、不可否认性和发送方身份认证；使用XML加密技术保证数据的机密性；根据XML文档的内容和结构定义授权访问规则进行良好的访问控制。

Shunt trip disconnecter - provides maximum protection by interrupting all power to the system in the event of a control sensed malfunction or overcurrent.

并联跳闸装置---一旦控制装置监测到故障发生或电流过载，将自动切断所有连接热水器的所有电源，最大限度保护热水器。

Shunt trip disconnecter - provides maximum protection by interrupt ing all power to the system in the event of a control sensed malfunction or overcurrent.

并联跳闸装置---一旦控制装置监测到故障发生或电流过载，将自动切断所有连接热水器的所有电源，最大限度保护热水器。

Improved Mohs micrographic surgery for the skin cancer could effect a radical cure tumour and remain more normal tissue so that reconstruction of secondary wound would be easy.

改良Mohs显微描记手术可指导手术医生更精确地控制扩大切除的范围，在根治肿瘤的同时最大限度的保留正常组织，为下一步的成形修复创造最佳条件。

According to the characteristic of silver nanoparticles, their uniform dispersion in reaction media was obtained by surface modification, ultrasonic radiation and the select of emulsion, and then emulsion polymerization system were formed by combination with reactive monomer and initiator. Nano-Ag/Polystyrene core-shell particles were prepared by emulsion polymerization and their microstructure were characterized by TEM, FTIR, XPS, AFM and TG/DTA. The experimental results showed that silver nanoparticles were coated by polymer and the composite particles had typical core/shell structure, and the microlevel combination was realized. Meantime, the form mechanism of nano-Ag/polystyrene core-shell particles was tentatively researched. The conclusion is that the perfect coating was able to obtained by the control of reaction condition.

根据纳米银粒子的特性，借助于表面处理、超声辐照以及乳化剂的选择，使其均匀分散在反应介质中，再与反应单体、引发剂等形成乳液聚合体系；采用乳液聚合方法、包裹聚合方式，制备出纳米银/聚苯乙烯核壳复合粒子，并借助于TEM、FTIR、 XPS、AFM、TG/DTA等分析手段对复合粒子微观结构进行了表征；结果表明：纳米银粒子表面被聚合物层包覆，复合粒子呈明显的核壳结构，实现了微观尺度上的复合；同时，初步探讨了纳米银/聚苯乙烯核壳复合粒子的形成机理，指出：通过控制反应条件，可以使形成纳米银/聚苯乙烯核壳复合粒子的聚合反应方式占主导地位，实现最大限度地包覆。

It could be applied in measuring many liquid media in industrial field,which could meet requirement of user farthest,in particular suitable for multiplicate equipments.

该产品能够最大限度的满足工业范围内多种流体介质的测量要求，适用于与各种测量控制设备配套使用。

The thought of slope safety and landslide prevention based on risk management processes is discussed from the risk factors identification, risk assessment, risk control, and risk prevention measures of the landslide in this paper, and it is pointed out that the risk management technique is a efficient method, which helps manager to cope with the possible risk preparedly and rationally and to adopt measures to reduce the risk in a maximum limit and finally to avoid and reduce the loss of property finally.

从滑坡的风险因素识别、风险评价、风险控制、滑坡风险防范措施等风险管理流程入手，对基于风险管理技术的边坡安全与滑坡预防思想进行了论述，指出应用风险管理技术是帮助管理者有准备地、理性地面对所可能遇见的风险，并采取措施最大限度地减少风险，最终减少或避免财产损失和人员伤亡的预防手段。

The anticaries and remineralization potentiality of the slow-release fluoride tablet can control the enamel area of 96 mm2. The tablet can meet the clinical demands.

该缓释氟粘贴片体外抗龋和再矿化潜力很大，即在本实验条件下，连续给30片氟粘贴片，最大限度能控制96 mm2大小的釉面，预计能够满足临床的需要。

Shaftless unwind and rewind units use AC servomotors and pneumatic chucks for faster and easier roll handling while maximizing control accuracy.

轴放松和倒带单位使用的交流伺服和气动夹头更快和更容易辊处理的同时，最大限度地控制精度。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。