瓶颈

Motibity changed by gear-box in direction and rotate speed is transferred to the blade axis on the right side to drive the blade axis. blade axis'parameter, blade assembling frame and blade assembling means are ascertained. The load and movement of the blade axis are analyzed. And the best blade rotate speed is ascertained. According to the request of no-tillage soil, the appropriate furrow openers are chosen. They are staggered and assembled in two rows .According to the sliding cutting request, the crucial parts of the anti-blocking——the sliding cutting blade, its edge curve is analyzed and designed in principle. The academic curve function is gotten. Combined with working practice and technics request, the blade's figuration parameter is designed, 65Mn is chosen as the material for blades. The working load is analyzed. And the intension of the sliding cutting is analyzed and checked with ANSYS software. At last, the spring rack of the suppress wheal is analyzed in principle. The theory and parameter of designing the spring rack of the suppress wheal. Experiment indicated that the anti-blocking capability of this anti-blocking equipment was excellent.

设计出适合此防堵装置的动力传输方案，动力经变速箱变向变速后从右侧传给刀轴，驱使刀片切割秸秆；确定出了刀轴的参数、刀片的安装结构和安装方法，对刀轴的受力和运动进行了分析，确定出了刀轴最佳转速；根据免耕地的要求，选择恰当的开沟器，并采用双排错位安装的办法，避免了"瓶颈"现象的发生；根据滑切的要求对此防堵装置的关键部件——滑切刀片的刃口曲线进行了理论分析和设计，得到了刀刃的理论曲线方程；结合生产实践及工艺要求，设计出刀片的外形参数，选择65Mn作为刀片的材料；分析和计算了刀片在工作中承受的载荷，运用ANSYS 软件对滑切刀片的强度进行了分析校核；最后对镇压轮的弹簧支架结构进行了理论分析，提出了设计镇压轮弹簧支架的理论和参数依据。

White rot fungi could delignification of fibre, many research has been carried on to introduce it into pulp industry and much progress has been done, but still can't industrialization.

白腐菌能够降解植物纤维中的木质素，人们试图将白腐菌此种特性引入制浆造纸过程，多年来，进行了较多的探索和努力，取得了令人兴奋的成果，但目前还未见产业化应用的报道，实验室研究工作仍然处于方兴未艾的局面，着力解决产业化技术开发的前期瓶颈问题。

White rot fungi are well known for their outstanding degradation ability because they could produce extracellular oxidative enzymes, which could act on different substrates.

广泛存在于水体、土壤的有毒污染物因其难降解性而成为环境治理的瓶颈问题，探索对其进行环境友好的生物治理技术是现今发展方向之一。

And for selection of in-depth research can be broken JianChuan woodcarving bottleneck of the breakthrough.

而且对选材的深入研究可以成为打破剑川木雕瓶颈的突破口之一。

To be JianChuan woodcarving breakthrough development bottleneck, adapt to the market competition.

以期待成为剑川木雕突破发展瓶颈，适应市场竞争的突破口。

JianChuan woodcarving has deep historic background, but in recent years, due to various reasons met development bottleneck, the government made the measures.

剑川木雕有着深厚的历史底蕴，但是近年来由于各种原因遇到了发展瓶颈，针对这种情况县政府做出了的措施。

Analyze the people, machine, substance of bottle-neck working procedure, hand in the improving report or measurement.

对瓶颈工序的人机物法给予分析，提交改进报告或措施

With the rapid development of domestic economic, the assumption of resources is acceleratory increased. The dependent on the outside providing subsequently increase and the breakneck situation of the resources appear.

随着国民经济持续快速发展，我国矿产资源的消耗量增长逐渐加快，对外依存度进一步提高，矿产资源的瓶颈制约凸显。

At first, this paper makes a systematic exposition of the content of supply-chain, supply-chain-management, purchasing in supply chain and purchasing management in supply chain environment and builds the theoretical foundation of this paper. Then, Make out the material classification from the acquirability of supply market and essentiality of material. Then based on this conclusion bring forward the proper purchasing strategies for Wuxi Weifu Group Co., Ltd. such as win-win strategy, ensure supply strategy, minimize cost strategy and minimize managerial cost strategy. Then sets up evaluated indexes system of short-term-efficiency-suppliers and long-term-efficiency-suppliers, applying the Fuzzy-evaluation method to evaluate suppliers. At the end of this paper, taking Wuxi Weifu Group Co., Ltd. as a case, comparing the status of its purchasing and supplier management, it puts forward some improvement suggestions to the existing problems in light of the above analysis such as the establishment and improvement of management information system, reengineering of purchasing organization and process, establishment of evaluated indexes system and implement of Just-in-time purchase.

本文首先系统的阐述供应链及供应链管理，供应链管理下的采购和采购管理的内容，从而构筑了本文的理论基础；继而，从物料采购的市场可得性和物料的重要性两种维度将物料分为战略性物料、瓶颈物料、重要物料、一般物料，在此基础上结合无锡威孚公司产品提出了相应的双赢、保障供应、最低成本、管理成本最小等采购策略；接着，建立了短/长期效率型供应商综合评价的指标体系；运用模糊综合评判方法对供应商的选择与评价体系进行了研究；最后，以无锡威孚集团有限公司为案例进行研究，结合前述的理论框架，通过对其采购和供应商管理现状的比较分析，找出不足之处，提出了改进建议和设想，如管理信息系统的建立和完善、采购组织和流程的重构、供应商选择评价体系的建立、即时制采购的实施等方案。

With the rapid development of society and economy, the contradiction between the supply and demand of water resources gets more aculeate, and the water resources becomes one of the key factors in sustainable development of social economy. At the same time, the rivalrousness of water utilizing is increasingly appearing.

随着经济社会的快速发展，水资源供需矛盾日益尖锐，水资源已成为制约社会经济可持续发展的瓶颈资源；与此同时，用水竞争性问题也越来越突出。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。