Structure modification of natural products is an important way to discover lead compounds.
天然产物的结构修饰是发现先导化合物的重要途径。
It gives the basis for the compressor ring valve structure modification and optimization design.
为压缩机环状阀的结构修改和优化设计提供了必要的基础。
In this thesis, the synthesis and its structure modification of bioactive stilbenes have been studied.
本论文研究了具有生物活性的芪类化合物的合成与结构修饰。
The results obtained make it possible to reduce the motor vibration and noise by means of structure modification.
研究结果使通过结构修改来降低电机的振动噪声成为可能。
Therefore, structure modification of classical peptide becomes a preferable way for drug research and development.
因此以经典肽为活性先导化合物进行结构改造成为开发新药的理想途径之一。
The structural analysis, construction measurement and construction method of frame shear wall structure modification are elaborated.
阐述了框架—剪力墙结构改造中的结构分析、构造措施以及施工方法。
First establish finite element model of engine assembly, and provide evidence for the structure modification of engine through mode analysis.
首先建立发动机总成有限元模型，通过模态分析，为发动机的结构修改提供依据。
The pilot injection is realized in medium pressure common rail electronic diesel injection system on the basis of injector structure modification.
在改进喷油器结构的基础上，在中压共轨喷油系统中实现了预喷。
In order to look for new antidiabetic compounds, we have improved the method of isolating mangiferin and studied on structure modification of mangiferin.
为了寻找新的抗糖尿病化合物，我们改进了知母中芒果苷的提取分离工艺，并对芒果苷进行了结构修饰研究。
RESULTS 8 compounds were isolated and identified, and 4 compounds were obtained by structure modification. The activities data as PDE5 inhibitors were tested.
结果分离得到8个化合物，结构修饰4个化合物，并测得其pde5抑制活性数据。
Comparative experiments show that the pure vegetable fuel can be applied directly in the motorcycle and the diesel engine without engine's structure modification.
对比试验结果表明：无需结构改造，在摩托车和柴油机上可直接燃用植物燃油。
The research progress on astaxanthin' s molecular structure modification to increase its water dispersibility and stability for enhancing physiological function in recent years had b…
本文概括了虾青素的各种异构体及其对生物学功能发挥的差异，并论述了近年来在提高其水相分散度，增加其稳定性等方面的结构修饰的研究进展。
The paper analyzes the characters of cylinder linear motor and the advantages and application future as the well pump drive system, and mentions the its structure modification direction.
分析了圆筒型直线电机的性能及其作为井下泵动力系统的优势和应用前景，提出了直线电机结构改进方向。
There were some alkaloids whose structures were similar to dictamnine in nature, and several dictamnine derivatives with good biological activity were synthesized by structure modification.
在自然界中存在着具有与白鲜碱结构相类似的生物碱，人们对这类生物碱进行结构修饰和改造，得到了一些具有良好生物活性的衍生物。
The invention relates to a sulphation modification method of codonopsis pilosula polysaccharide, belonging to the traditional Chinese medicine polysaccharide structure modification technical field.
本发明为一种党参多糖的硫酸化修饰方法，属于中药多糖的结构改造技术领域。
Any modification to the record structure requires modifications to the applications that access these records.
修改了记录结构就需要修改访问这些记录的应用程序。
By separating the two elements of the structure into two different cache lines, modification of one cache line does not cause another cache line to be read in again from the memory.
通过把该数据结构的两个元素分离到两条不同的高速缓存线路，一条高速缓存线路的修改就不会导致再次从存储器读入另外一条高速缓存线路。
Figure 1 depicts one way we might structure our modification of the system.
图1描述了一种我们可以进行系统修正的方法。
All it means is that you should structure an application so that you can add new functionality with minimal modification to existing code.
它的全部含义就是你应该这样去构建一个应用程序：可以在对现有代码做最小修改的同时添加新的功能。
That modification most likely means that you preserve the basic structure of your program and much of the user experience but modify the part where it parses the XML.
最可能进行的修改意味着您保留您的程序的基本结构和大部分用户体验，只修改解析xml的部分。
This knowledge is used to ensure that the creation and modification of instance data conforms to the structure and type rules for the data object.
该知识用于确保对实例数据的创建和修改符合数据对象的结构和类型规则。
A zipper is a way of representing a data structure with a local context, such that navigation (iteration) and modification from the current context are, for the most part, constant-time.
zippers是使用本地上下文表示数据结构的一种方法，这使当前上下文中的导航(迭代)和修改在很大程度上具有常量时间的特点。
Flexibility: if the structure of the data is constantly changing on the backend, it becomes tedious and error-prone to recreate the data binding beans for each modification of the native data type.
灵活性：如果后端数据的结构经常变更，那么为固有数据类型的每个修改都重新创建数据绑定bean是冗长且容易出错的。
The structural dynamic characteristic sensitivity is widely applied to modification of the dynamic structure and the diagnose trouble.
结构动特性灵敏度在动力学结构修改和故障诊断中被广泛地应用。
The modification of both pitch and formant structure contributed greatly to reproducing the target speaker's characteristics.
通过修改基音频率和共振峰结构，该方法合成的语音有效地模拟了目标说话人的特性。
For the modification of the retaining wall, it should produce a better appearance, and the formation of dense structure.
修改的挡土墙，应该产生一个更好的外观，并形成致密结构。
These sections were dynamically linked to the structure of the pavilion and their modification has its representation in real time in the form of the changing shape of the interior.
这些部分均连接到展厅结构中，对其的修改则体现在室内造型的变化中。
These researches supplied the basis for the further work of Structure-activity relationships and Structural modification of eugenol's derivatives.
这些研究结果，为进一步研究丁香酚类化合物的构效关系和结构改造提供了依据。
These researches supplied the basis for the further work of Structure-activity relationships and Structural modification of eugenol's derivatives.
这些研究结果，为进一步研究丁香酚类化合物的构效关系和结构改造提供了依据。
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