长期存在的

With the high sensitivity of biomarker assays,the exposure levels and its biological effect in population exposed to low level carcinogens for a long time can be more directly measured,and the dose-effect relationship between biomarkers and a specific risk can be more accurately descripted The study on biomarker,which still stayed in primary stage,presented good prospect in the field of risk assessment on environmental health In this review,data are summarized on the role of biomarkers that are used for...

利用生物标志物高灵敏的特性，可以直接测量人群长期低剂量的暴露水平及其效应水平，能够较准确地估计生物标志物水平与特定危险性之间的关系，这方面的研究尚属起步阶段，但在环境健康危险度评价中具有很好的发展前景。对生物标志物的选择，其在低剂量致癌物暴露危险度评价中的作用，评价方法或途径及存在的问题进行了总结。

This concept pithily reveals the longstanding, unclear white-collar crime problem, and clearly points out the criminals include not only paupers or persons mentally deranged who commit bloodguilt, crime of pillage, crime of theft, etc., but also the dapper upper-class people who utilize their professions, social status, influence and intelligence technique to commit the worse crimes which can invisibly evade the criminal law and avoid being punished effectively.

这一概念简洁而有力的向人们揭示了长期存在但一直模糊不清的白领犯罪问题，清楚的指出犯罪并不仅仅是穷人或者精神异常的人犯下的杀人、抢劫、盗窃等等，衣冠楚楚的社会上层人士凭借其职业、地位和权势，运用智能手段的犯下的罪行更为严重，同时更加具有隐蔽性和对刑法的规避性，难以得到有效的惩治。

For long time, my factory prints a version to electroplate a group in addition to import of the nickel urn is full-automatic, other of five electroplates slot almost is depend on moving an operation to control to electroplate of temperature, electric current and time of, print a version to plate chrome especially, with its special operation craft and the high causticity, the long-term existence product quality unsteady problem, can not keep up with the request that assurance product quality unifier.

长久以来，上海印钞厂印版电镀小组除了进口的镍缸是全自动的，其它的五个电镀槽几乎都是依靠手动操作来控制电镀时的温度、电流和时间的，特别是印版镀铬，以其特殊的操作工艺和高度腐蚀性，长期存在产品质量不稳定的问题，跟不上保证产品质量的统一性的要求。

Then it puts forward sub-regional-economic cooperation as the best choice for Yunnan and its neighboring countries to have economic and trade cooperation. In the practical study of developing Yunnan"s frontier trade, this essay analyzes to the full the current situation and existing problems of developing Yunnan frontier trade, combining with China"s accession to WTO, exploration of the west regions and the founding of the ASEAN. Frontier trade plays an important role in the nation"s and Yunnan province"s social economic life. It has great influence on the nation"s safety. Frontier trade is centered on the low-cost consumable supplies and consignation trade. Its prosperity for a long time relies on the inland, which constitutes three remarkable characteristics of Yunnan"s frontier trade.

在开展云南省边境贸易的实践研究中，本文从六个方面较为全面地分析了云南省边境贸易发展的现状、存在的问题，指出：边境贸易在全国和全省社会经济生活中占有重要地位，对国家安全影响深远；边境贸易以低附加值商品和易货贸易为主；边境贸易市场的繁荣长期依赖内地，是云南省边境贸易最显著的三个特点，结合中国加入WTO、西部大开发、大东盟的成立等，对云南边境贸易在新时期的发展方向作了一些初浅的探讨。

In this foundation, analyzes the general situation of current urban the real estate industry in China, some significant characters which are resulted by the inharmonic development of the real estate industry and economy development are analyzed deeply.Using the analytical model of input-output, based on a detailed analysis of the internal relations between the estate industry and the development of related industries. Thus indicating the driving erect of estate industry on related industries.

运用投入产出分析模型对我国房地产业与相关产业发展之间的内在联系进行了深入的分析，分析房地产业对国民经济相关产业的带动效应：利用计量经济学中的协整检验以及格兰杰因果检验模型，对房地产业与国民经济增长之(来源：374737ABC论文网www.abclunwen.com)间的协整关系和因果关系分别进行检验，结果表明，两者之间并不存在长期稳定的关系。

But now it is an interim. The analog trunked system will exist for a long time due to its technology maturity, wide application and relative low price.

随着时代的发展，数字式无线集群系统正以迅猛之势发展，但是目前正处在一个过渡的阶段，模拟集群以其技术的成熟性，广泛的应用普及以及相对低廉的造价将长期存在。

The fact that China has followed other economies into decline does not mark a conclusive debunking of the decoupling theory.

中国经济随大波下降并不是最终的脱钩理论的表现，它无疑也是各种各样的长期的存在的内部因素的表现。

The stern situation which steel enterprises face is: Steel is overproduced and the supply is bigger than the demand; the price of steel product falls sharply, but the price of raw materials and energy resources rises rapidly; Resource's connatural weakness decides that the steel enterprises'development which under the extensive economic development system will be limited by the resources bottleneck for a long time.

钢铁企业面临的严峻形势是：钢铁产品生产过剩、供大于求；钢铁产品的价格直线下跌，而原材料、能源的价格却飞涨；资源的先天性弱势，决定了在粗放型经济增长模式下钢铁企业受资源瓶颈的制约将长期存在。

This paper made a scientific study using the principle of thermodynamics based on the investigation of building of hot wall and heated brick bed.

通过对火炕和火墙砌筑的调研，利用热力学原理进行了科学的分析，并通过长期的试验，总结改进了火炕火墙的砌筑方法，克服了火炕火墙通常存在的问题，保证了其正常使用。

It analysedby experiments that the problem on"Ecological adaptation ofChinese White Wax Scale"existed and discussed in academiccircles for a long time,established"Hypothesis of excreting waxmechanism of Chinese White Wax Scale",explained thephenomenon of"cultivated insect on high mountains without waxproduced and produced wax on hilly land without insect cultivated",analysed reasons to cause these phenomena.

在研究工作的基础上，用所取得的试验结果分析和讨论了学术界长期存在和争论的&白蜡虫生态适应性&问题，建立了&白蜡虫泌蜡机理假说&，解释了&高山产虫不产蜡，低山产蜡不产虫&的现象，并分析了产生这些现象的原因。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。