然而，这种方法的将会导致数据库的执行和维护非常复杂，而且成本较高。
However, this solution makes the implementation and maintenance of the databases complex and costly.
单一的水性聚氨酯分散体存在自增稠差、固含量低、耐水性差、机械强度不如丙烯酸树脂等缺点，而且成本较高。
There exist many disadvantages of the single WPU emulsion, such as poor self-thickening, low solid content, weak water resistance, lower mechanical strength compared to acrylic resin and high cost.
这种方法导致了光学组件变得更大、更重而且趋于复杂化，光学制造成本较高。
This approach leads to large, heavy and complex optical assemblies and a higher manufacturing cost for specialized optics.
如果希望某种技术在商业利用方面切实可行，首先在物料的预处理方面要求所得到的中间产品必须是容易发酵的糖份，产量高，浓度也较高，而且技术的实施成本还不能过高，还有生产过程中更不能使用有毒物质，不可以耗费太多能源，最后，所生产出来的草料油在价格方面必须能够与传统汽油一争高下。
They should not use toxic materials or require too much energy input to work. They must also be able to produce grassoline at a price that can compete with gasoline.
现在有一种新设备可以利用潮汐能发电，而且可以在成本上与化石燃料发电一较高下。
A new device for harnessing wave energy is promising renewable electricity at a cost to rival fossil fuel sources.
在我看来，相较于大型的同行们，不论私人或公共的区域性银行，他们的营利手段没有那麽多元而且理论上他们的成本较高。
Compared with larger peers, their earnings are less diversified and their arguments for more capital, private or public, less persuasive.
而且海运企业还是一个成本较高的运输行业，加强对成本的管理，无疑也是提高运输经济效益的一个重要途径。
Maritime risk costs is an important part of shipping costs and have a great influence on company's revenue, so its analysis is very useful.
科学合理的规模结构不仅是实现规模经济的基本条件，而且是提高经济效益、降低交易成本、获得较高的企业竞争力的重要保证。
The scale which is scientific and reasonable ensures that profit is improved, cost of exchange is reduced and enterprise competitive competence is increased, economy of scale is come true as well.
采用聚合硫酸铁去除液体三氯化铁中的钙离子，钙去除率几乎可达100%，产品质量较高，而且除钙工艺成本低，流程易于控制。
Using polymeric (ferric) sulfate as remover, calcium removal rate is almost 100%. This process has characteristics of lower cost, easily controlled and not influence on the quality of products.
这种方法导致了光学组件变得更大、更重而且趋于复杂化，光学制造成本较高。
This approach leads to large, heavy and complex optical assemblies and a higher manufacturing cost for specialized optics .
人工发现和维护社区成本较高，修改困难，而且还存在着许多无法通过人工来发现的潜在的社区。
The cost of discovering and maintaining communities by human is very high and the job is difficult, and many potential communities can't found out by this way.
本发明不仅处置了污泥，而且可获得附加值较高的微生物重金属沉淀剂，从而降低了污泥处理处置成本。
The invention not only treats sludge, but also obtains microorganism heavy metal precipitator with higher additional value so as to reduce sludge treatment cost.
啤酒行业不仅存在较高的运输物流成本，而且在啤酒生产企业内部，包装物流成本和仓储物流成本也是显而易见的。
Not only there is a huge transport and logistics costs in beer industry, but also the packaging logistics costs and the cost of inventory in beer production enterprise is considerable.
啤酒行业不仅存在较高的运输物流成本，而且在啤酒生产企业内部，包装物流成本和仓储物流成本也是显而易见的。
Not only there is a huge transport and logistics costs in beer industry, but also the packaging logistics costs and the cost of inventory in beer production enterprise is considerable.
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