查询词典 natural base

As an important industrial solvent,it is capable to dissolve cellulose ether, cellulose ester, nitrocellulose ,alkaline base dyestuff, PVC, polyvinyl acetate, polymethylmethacrylate, polystyrene, coumarone resin, 100% phenol resin, modified phenol resin and various natural resins.

能溶解纤维素醚、纤维素酯、硝化纤维素、碱性染料、聚氯乙烯、聚醋酸乙烯酯、聚甲基丙烯酸甲酯、聚苯乙烯、香豆酮树脂、100%酚树脂、改性酚树脂以及多种天然树脂，是一种重要的工业溶剂。

The static natural frequencies and dynamic frequencies (under 3000rpm) are calculated by the finite element method and cyclic symmetry technique. The rotating vibration behaviors of the two models are compared. Different vibration characteristics between the two models are discussed. Geometry mismatch in a turbine blade root, which arose in manufacturing process or caused by wearing out during service, leads to contact conditions changed in fir-tree attachments. As a result, shifting of the fundamental frequencies and redistribution of stress in the blade base possibly cause failure of the blade.

在叶片—轮盘耦合系统振动研究方面，建立了带围带的叶片振动计算模型和带围带的叶片—轮盘耦合系统振动计算模型，考虑旋转离心力作用，采用波传播技术，对两种模型分别进行了整圈模态分析，得到了某汽轮机叶片模型和叶片—轮盘耦合模型在0转速和工作转速(3000rpm)下的振动模态，并对所得结果进行分析比较，讨论了整圈叶片振动模态与叶片—轮盘耦合振动模态的区别。

On the base of the principal factors selected from natural, social and economical conditions in Shenyang, 230 varieties virescence plants are analyzed and ranked, the paper picks out diaphysis trees, basic trees, ongoing expansion trees, adequately retained trees and selective trees from them, and the selection and adjustment program of basic trees and diaphysis trees.

在此基础上，采用园林专家咨询评价的方法，结合前人的研究成果及园林工作的实践总结，从生态适应性、观赏性、生态效能等方面全面系统的建立了沈阳市绿化植物的评价应用的综合指标体系，并根据沈阳市的自然条件和实际情况确定了主要的指标因子对沈阳市常见的230种绿化植物进行了综合评判和分级，筛选出最适宜的骨干树种和适宜的基本树种及宜继续推广的、可适当保留的或应淘汰的种类，提出了沈阳市绿化基调树种和骨干树种选择和调整的方案。

Great achievements have been attained presently on the shallow natural gas exploration in mud diapir zone on the base of the regularity of gas migration and accumulation controlled by the upward-intrusion of thermal fluid.

根据泥底辟热流体上侵活动控制天然气运聚成藏的地质规律，目前已在泥底辟带浅层天然气勘探中取得了很大的成功，迄今为止在盆地所获的天然气地质储量主要源于浅层勘探领域。

The diorama of natural ground scene is modeled from the DEM data base on fractal theory and facet model.

在对地面场景，使用分形插值理论和小面单元模型来对实测的地面场景DEM数据进行处理，最后再利用地面散射特性模型结合地面场景模型和空间关系模型来计算地面场景的RCS数据阵，生成场景回波数据。

Eco-tourism is a kind of tourism that base on natural and human environment.

生态旅游是一种基于自然与人文环境的旅游形式。

The natural ecosystem is one of the necessary conditions of human life,and the material base for economic development.

自然生态环境是人类赖以生活的基本条件，是经济发展的物质基础。

"Chinese children's growth must read" to the initial reading ability and the knowledge base have yet to build up young children to read objects, including the children are most curious, most interested in understanding the mysteries of the universe, animal the world, historical records, children's fables and other types of encyclopedic knowledge, natural science, humanities, are the main areas covered, in the full and comprehensive knowledge of structure, to new ideas, new materials, new results for the selection of the standard , and strive to provide the best spiritual nourishment to our children, our future society is designed to open a new owner of the window fan to see the world, build a vessel about to sail the knowledge of marine vessels.

"中国儿童成长必读书"以初步具备阅读能力而知识基础尚未搭建起来的幼童为阅读对象，内容包括孩子们最感好奇、最有兴趣了解的宇宙奥秘、动物世界、历史记载、童话寓言等百科全书式的各类知识领域，自然科学、人文科学的主要领域均有涉及，在完整、全面的知识结构内，以新观点、新材料、新成果为选择标准，力求提供最好的精神营养给我们的孩子们，旨在为我们未来社会的新主人打开一扇扇看世界的窗子，打造一艘艘即将扬帆远航知识海洋的船只。

The material in this experiment was fernery,on the base of making fumet,it was added sugar,bee,citric acid etc,by undergoing a set of process as flavouring,filtrating and steritizating this fernery healthy beverage,was a kind of natural healthy food with unique taste and nutrition.

以蕨根为主要原料，制取原汁，添加糖浆、蜂蜜、柠檬酸等辅料，经调配、过滤、灭菌等工序加工而成的蕨根汁保健饮料，其色泽美观、甜酸爽口、营养丰富、风味独特，具有较强的保健作用。

A rich film library can provide us information on the history, society, culture, tradition, geography, nature, economy, and politics of English-speaking countries, helping expand the content of teaching and knowledge base. A real-life process of language interaction can also help give students exposure to the natural language in a social context. Lively stories and artistic performance can make comprehension easier.

丰富的电影资料可以向我们提供英语国家的历史、社会、风土人情、地理、自然、经济、政治等情况，有助于丰富教学内容和扩大知识面，真正的语言交际过程还有助于学生接触交际中的自然语言，生动的故事情节及艺术表现可以轻而易举地帮助理解。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。