查询词典 difficulties

Human overcame difficulties in the process of gradually learning to use natural resources and conferring by the transformation of the natural and created the architectural glories of civilization today.

人类在这个克服困难的过程中慢慢学会了利用自然所赋予的资源并改造了自然，创造了今天灿烂辉煌的建筑文明。

Difficulties for Class V carried to the extreme of navigability.

难度同五级，但可漂性到了极端的情况。

Optimism is the capability to channel negativism into ability to overcome difficulties.

今天刚听完一个讲座，内容是如何在这个瞬息万变的社会占有立足之地，其中题到乐观的重要性。

Two of her nieces, Nerissa and Catherine, were born with learning difficulties and spent their lives in institutions.

她的侄女Nerissa和Catherine天生有学习困难，一直住在学校里。

He nerved himself in face of difficulties.

他鼓起勇气面对困难。

He nerved himself to face the difficulties .

他鼓起勇气面对困难。

They may possess precious and amiable traits, but they are nerveless and almost useless when difficulties are to be met or obstacles surmounted.

他们或许拥有宝贵可爱的特长，但及至遇到困难需要应付，或有逆境需要克服时，却毫无勇气，简直是无用的人。

In our life ,we will meet lots of difficulties ,but I'm sure if we never say die ,we will be the winners .

在我们的生活中，我们会遇到许多的困难，但我坚信只要我们永不言败，我们一定会成为生活的强者。

Progress and key difficulties in the synthesis and characterization of carbon nitride crystals are summarized.

介绍了氮化碳晶体的合成与表征研究进展，分析了氮化碳晶体合成中存在的主要困难。

According to the above study results, especially the steady operation of two-sludge system（2A/O+N 2SBR）, it can be proved that denitrification and excess phosphorus uptake are relatively independent and intersectant biological processes. The overlap is that denitrifying phosphorus removing bacteriawhich possesses the two bacterial metabolisms, could utilize nitrate as an electron acceptor for phosphorus uptake. The two-sludge system can not only combined biological phosphorus removal and denitrification processes to form a process in practical wastwater treatment , but also solved the main difficulties of current single-sludge systems:①the sludge age competition between phosphorus removing bacteria and nitrifier;② the substrate competition between denitrification and dephosphatation.

以上的研究结果，尤其是时间序列的双泥生物反硝化除磷脱氮系统工艺（2A/O+N 2SBR法）的稳定运行，不仅证明了生物脱氮与生物除磷是两个既相对独立又相互交叉的生理过程，其交叉点是同时拥有硝酸盐还原性和超量吸磷这两种生化特性的细菌进行的反硝化吸磷脱氮生化反应，而且双泥系统工艺克服了常规单泥生物脱氮除磷工艺的两大问题（①聚磷菌和硝化菌的SRT相互干扰；②反硝化与生物除磷竞争VFA），同时保证了脱氮和除磷效果，排水指标达到污水综合排水标准（GB8978-1996）的一级标准，具有实际工程使用价值。

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。