查询词典 disadvantages

The traditional solid phase reaction of preparation has many disadvantages: it is very difficult to get the pure calcium-titanium mine phase even at the annealing temperature of 1000DEG C; the size of the material is very large and ununiform; the powder needs very high agglutinating temperature (1350DEG C) to get pyknotic ceramics.

固相反应法制备铌钪酸铅，在1000℃的较高的煅烧温度下也难于得到纯钙钛矿相的粉体，且颗粒尺寸大，尺寸分布不均匀，且这种粉体而要求高的烧结温度(1350℃)以获得致密的陶瓷。

The microwave assisted synthesis of aromatic esters has advantages such as less time, efficiency and safety while the traditional process has the disadvantages such as long rection time, low yield, serious pollution and difficult separation.

传统加热条件下合成芳香酯具有反应时间长、产率低、污染大及后处理困难等缺点。微波辅助合成芳香酯具有反应快速、高效及安全等优点。该文综述了微波辅助合成芳香酯的研究进展，并展望了微波技术在芳香酯合成中的发展前景。

The microwave assisted synthesis of aromatic esters has advantages such as less time, efficiency and safety while the traditional process has the disadvantages such as long rection time, low yield, serious pollution and difficult separation.

传统加热条件下合成芳香酯具有反应时间长、产率低、污染大及后处理困难等缺点。微波辅助合成芳香酯具有反应快速、高效及安全等优点。

However, its disadvantages of low efficiency and less refrigerating output limit its more extensive applications.

然而由于其效率低，制冷量小等缺点制约了其更广泛的应用。

However, membrane suppressors also have certain disadvantages compared to packed bed suppressors such as cost, leakage of regenerant causing higher detector background, the requirement for an external supply of regenerant solution and the fact that membrane suppressors are complex and not user serviceable.

&然而，与填充床抑制器相比，膜抑制器也有不足之处，如成本，再生剂泄漏导致更高的检测器背景，需要外部提供再生溶液，以及膜抑制器的复杂性和用户难以操作的事实等等，因此，开发低价、高性能填充床抑制器会更有益。&这正是万通致力所为！

However, membrane suppressors also have certain disadvantages compared to packed bed suppressors such as cost, leakage of regenerant causing higher detector background, the requirement for an external supply of regenerant solution and the fact that membrane suppressors are complex and not user serviceable.

&然而，与填充床抑制器相比，膜抑制器也有不足之处，如成本，再生剂泄漏导致更高的检测器背景，需要外部提供再生溶液，以及膜抑制器的复杂性和用户难以操作的事实等等，因此，开发低价、高性能填充床抑制器会更有益。&这正是万通致力所为！万通MSM抑制器提供十年的保用期，是现有的最成熟、尖端的填充床抑制器。

Firstly, the development of the modern compensation theory put forward higher requestion to compensation administration; secondly ,there are many disadvantages existing in the compensation systems, demonstrating as the outworn distributive systems, which cann't motivate employees effectively.

一方面，现代薪酬理论的发展对薪酬管理提出了更高的要求；另一方面，我国企业的薪酬体系存在很大的弊端，表现为分配体制陈旧；不能有效地激励员工。

Facing the fact that the inefficient china securities market, the article analyzes carefully the reason for low contract efficiency from the following aspects such as property rights, insufficient information regulation and the structure of regulation mechanism. What抯 more, the article points out reregulation is a possible way to normalization development of china security market after analyzing the disadvantages of strengthening regulation and deregulation. At length, the thesis paper will discuss the design of reregulation mechanism from the principles of incentive and constraint regulation institution and punishment mechanism.

面对中国证券市场管制低效的局面，本文从产权、信息不足约束以及管制机构治理结构等方面详细剖析了造成管制低效的原因，进而在分析加强管制和放松管制等论点的不足之后，指出再管制是通向中国证券市场规范化发展的可行之路，而且从管制机构激励约束、惩罚原则等方面讨论了再管制实施机制的设计问题。

this text briefly introduce association rule.by analyzing the application of classic apriori algorithm, apriori algorithm is found that it has some disadvantages. and then farm_new algorithm and the apriori algorithm of riddling compression those improving the association rule algorithm are proposed.

简要地介绍了关联规则，通过对关联分析的经典算法-apriori算法的分析，发现了经典算法apriori算法的缺陷，给出了改进的关联规则算法farm_new算法和基于筛选压缩的apriori挖掘算。

But the method of the schapping has a lot of disadvantages, For example ,it needs long production cycle、 heavy labor, holds lots of areas ,and provides low production efficiency and bad working conditions .

腐化练的缺点是劳动强度大，生产周期长，效率低，占地面积大，生产过程中卫生条件差。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。