必要性

This study emphasizes the essentiality of dietary lutein to maintain its status in the retina.

这项研究强调了补充膳食叶黄素，保护视网膜正常功能的必要性。

Anything, no matter how luxurious it is, will become a necessity when it is widely used.

任何事情，无论多么豪华的是，当它会成为被广泛使用的必要性。

In chapter 3, the feasible and necessary of developing steel structure residential building in China is analyzed from macrostructure such as national economy and sustainable design.

第三章从国民经济和可持续发展的宏观角度分析探讨了钢结构住宅在我国发展的可行性和必要性。

The present production condition in Yuquanling concentrator was analyzed, the necessity and feasibility of technical reconstruction were pointed out, and such technical measures as using autogenous grinding self return screen and small magnetic pulley and increasing fine screen and their effects were described.

对玉泉岭选矿厂的生产现状进行了分析，并指出了技术改造的必要性和可行性，对自磨自返筛、小磁滑轮、加大细筛等技术措施及其效果进行了论述。

Recently, the affair of caricature of Mahomet shows the necessity to respect religious spirits and sages.

近来出现的穆罕默德谩画事件，表明了对宗教神灵和圣贤尊重的必要性。

In this chapter, we lay stress on the clause of the risk of credit guarantee, we think the main clause is the high management risk and the low credit level of the SMEs.

第四章首先从中小企业信用担保风险管理的客观必要性、特点、目标和原则、以及信用担保风险管理组织形式等几方面详细分析中小企业信用担保风险管理。

This article discusses the necessity and feasibility of virtual property protection, and hopes that as soon as possible to introduce virtual items of the protection law. So the majority of online game players can have the legitimate rights and effective legal protection, China's online game industry will obtain more broader space to develop.

文章阐述了虚拟财产刑法保护的必要性和可行性，提出了构建虚拟财产刑法保护的立法建议，从而使广大的网络游戏玩家的合法权益能得到法律的有效保护，进而使我国的网络游戏产业能得到更广阔的发展空间。

Enterprises enhance their competition strength by shortening the delivery time to customers. However, since customers' demand changes rapidly, many enterprises have change their business model from make-to-stock to make-to-order. Consequently, the stocks which are used to buffer between production and distribution is reduced which results in a closer interaction between production and distribution and increases the essentiality of integrating the production and distribution stages.

企业为了提升竞争力而缩短订单送达顾客的前置时间，以及顾客对於产品的多样化需求下，企业的生产型态由存货生产转为接单式生产，使得原本作为生产与配送阶段间缓冲的存货逐渐的减少，造成了生产与配送作业间的互动更加密切，同时也增加了研究如何整合此两阶段问题的必要性。

It introduces the concept of the Limit of Malthus, in order to explain the basic problems in the development of human beings, and points out how to break the Limit.

在对前人研究的基础上，引入"马尔萨斯制约"的概念，并以此来说明人类发展所面临的基本问题。通过人类突破"马尔萨斯制约"的必要性分析，指出了突破这一制约的方式。

Objective This study was to discuss two phase treatment of Angle's class Ⅱ with retrusive mandible.

目的 本文通过探讨对下颌后缩型Ⅱ类错的两期治疗，提出早期阻断矫治的重要性，以及第二期治疗的必要性。

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。