确定这座建筑物的确切年代是不可能的。
当然，这些污染物对气候变暖造成的确切影响，在科学上仍存在一定程度的不确定性。
Of course, a degree of scientific uncertainty remains about some of these pollutants' precise contribution to warming.
直到我们有了更大的确定性，绑架的数据，它不应该确定我们的理解中央的不明飞行物谜。
Until we have gained a much greater certainty with the abduction data, it should not define our central understanding of the UFO mystery.
缩合这个术语，现在在聚合物科学文献中已牢固的确定。
The term condensation is now firmly entrenched in the literature of polymer science.
在配合物教学中，配位数的确定是一大难点，本文总结了确定配位数的一些规律和方法，以便于广大师生参考和学习。
It is difficult to judge coordination number in complex, so we provide some rules and approaches in the paper for teachers and students to consult and study.
《庄子》对万物、现实及利、用等的怀疑与否定表明它对经验与现象的确定性的怀疑与否定。
Zhuangzi s doubt and denial of all substance and reality, function and utility indicates its doubt of the certainty of the existence.
通过对喇嘛甸油田聚合物驱单井效果分析，给出了采油井阶段效果评价方法，即单井见效时间和含水回升时间早晚的确定方法。
A method on evaluation time that water cut fall or rise is given out through analyzing the polymer flooding of single well in Lamadian oilfield.
摘要生物标志化合物在石油地质中应用广泛，可应用于源岩有机质类型和古沉积环境评价以及热演化阶段的确定等。
Biomarker has a wide application in the research of petroleum geology, such as different types of organics thermal evolution, ancient sediments' environment and so on.
本文的研究可以为污染物环境影响评估方法的应用以及火用分析方法中基准环境模型的确定提供指导与参考。
The research in this paper can provide the method instruction for the application of the environmental impact evaluation methods and the determination the reference environmental model.
介绍了尾矿库排洪的特点、防洪标准、以及洪水计算中存在的问题，针对防洪标准的确定、排水构筑物型式的选择以及尾矿库排洪设施综合利用等问题提出了一些看法。
In connection with the determination of flood control standard, the selection of drainage structure form, and multipurpose use of flood discharge facilities in tailings pond, some views are given.
聚合物粒子凝聚成膜涂料配方设计的主要内容包括涂料配方设计原则、涂料组成的确定和涂料示例等。
The design of formulation for polymer particle coalescing film-forming coatings included the principle of design, composition and examples.
对于一个浓度分布狭窄的确定的分析物，各种各样的剂量响应图形可能对未知样本的准确估计有必要。
For a certain analyte that distributes within a narrow concentration range, the varied pattern of the dose-response curve might be necessary for accurate evaluation of unknown samples.
探讨了基于DEM的VLL物方影像匹配方法、多尺度表达的数字高程模型，以及自适应窗口大小和变化阈值的确定等用于三维变化检测的关键技术。
And many key techniques such as VLL matching, multi-scale DEM, self-adapted matching window and thresholds for the framework are discussed and investigated deeply.
同时也指出了火电厂主要固体污染物的基准物质及其基准浓度的确定方法。
Meanwhile, the method to determine the standard substances and its benchmark concentrations of the main solid pollutions of the thermal power plant are discussed.
利用DR—1型处理机分解混合物光谱时，要注意仪器有关参数的选择及程序中常数的确定。
When the spectrum of the mixture is decomposed by the use of dr-1 type processor, select the related parameters of instrument and determine the constants in program.
手性化合物绝对构型的确定一直是有机化学特别是手性药物合成研究过程中经常遇到的问题之一。
The determination of absolute configuration for chiral compounds is one of the most important problem in the organic chemisty, especially for chiral drug synthesis.
研究区延长组物源方向的确定对沉积相研究及能源勘探开发具有重要意义。
It is very important for confirmation of the sedimentary source direction of Yanchang Formation to research the sedimentary facies of Yanchang Formation and direct the energy sources exploration.
通过对宜昌地区第四纪沉积物中峨眉山玄武岩砾石的寻找和研究，可以确定三峡以西物质搬运至宜昌地区的时间，从而为长江三峡贯通时间的确定提供参考。
Via searching and finding the E mei Mountain basalt gravels in the Quaternary sediments in the Yichang area, the cutting-through time of the Three Gorges can be determined.
目的确定可靠的筛选小分子人白介素6 (IL 6)受体拮抗剂先导化合物的细胞模型。
AIM to confirm R2 cells being reliable cell model to screen small molecular human interleukin-6 (IL-6) receptor antagonists.
目的确定可靠的筛选小分子人白介素6 (IL 6)受体拮抗剂先导化合物的细胞模型。
AIM to confirm R2 cells being reliable cell model to screen small molecular human interleukin-6 (IL-6) receptor antagonists.
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