查询词典 countable set

Most of the vocabulary wasn't new but the focus was more around grammar; using plurals versus singular form and countable and uncountablenouns.

我们学习的多数都不是新词汇，重点是学习语法；使用复数和单数名词，可数和不可数名词。

But when the uncountable noun is modified by and adjective or a prepositional phrase, it becomes countable and therefore can be modified by the indefinite article to refer to an individual or a specific type.

英语的不可数名词不能冠以不定冠词，但当不可数名词受到形容词或介词短语的修饰或限定时却变成可数名词，因而可以受到不定冠词的修饰，表示某种个别的或特殊的情况。

Remark: An indefinite article "a/an" can be used before only a singular countable noun.

注： 不定冠词&a/an&只可用於单数可数名词前。

The uncountable noun should not be preceded by the indefinite article. But when the uncountable noun is modified by and adjective or a prepositional phrase, it becomes countable and therefore can be modified by the indefinite article to refer to an individual or a specific type.

英语的不可数名词不能冠以不定冠词，但当不可数名词受到形容词或介词短语的修饰或限定时却变成可数名词，因而可以受到不定冠词的修饰，表示某种个别的或特殊的情况。

English Indefinite Article; Countable Nouns; Mass Nouns; Abstract Nouns; Measurement

英语不定冠词；可数名词；物质名词；抽象名词；计数和量度

According to evaluation of the thermal, hydraulic, environmental and mechanic characteristics and energy performance of building and VAV air-conditioning system, and evaluation of the control performance of local control loops using the simulator of VAV system, this paper presents five on-line supervisory control strategies for local control loops: on-line optimization of VAV supply air static pressure set-point, on-line optimization of AHU supply air temperature set-point, on-line optimization of on/off set of CAV sub-system, on-line optimization of outdoor air set-point and on-line optimization of chilled water secondary pump pressure set-point.

通过数字仿真器对建筑物及其变风量空调系统的热力、动力、环境和能耗等运行特性的模拟，以及对系统常规采用的下位机控制回路可控性和稳定性等控制特性的研究和分析，本文先从局部的角度开展了系统局部优化的研究。提出并在仿真器上分别实施了VAV送风静压设定的实时优化，AHU送风温度设定的实时优化，CAV子系统开／停的实时优化，新风量设定的实时优化以及二级泵冷媒水供水压差设定的实时优化。

Grinding machine, 1 set Plane Grinding machine, 3 sets EDM, 1 set CMM, 1 set universal tool microscope, 1 set cutter aligner, 1 set roughness instrument, etc., much of equipments are the most advanced in domestic.

主要 设备有：加工中心9台（FV-800A 6台、QM-800A 1台、QM-22T 1台、卧式加工中心1台）、数控车床6台（FTC-20 2台、FTC-10 2台、FTC-30 1台、FTC-150 1台）、外圆磨一台、平面磨一台、慢走丝线切割机一台、快走丝线切割机一台，电火花成形机（MOND030）、三维坐标测量仪（GALAXY/SCICNC）、万能工具显微镜（19JC），对刀仪、粗糙度仪等。

Through the analysis of the second power Cartesian product of natural number set N——N×N and the thirdpower Cartesian product of natural number set N——N×N×N,obtains the conclusion that they all have the bijective relation to natural number set N,it means that the set N×N and the set N×N×N are all countably infinite.

通过对自然数集合N的二次笛卡尔积运算———N×N和三次笛卡尔积运算———N×N×N的详细分析，得出了它们与自然数集合N之间都存在双射关系结论，即集合N×N和集合N×N×N都是可数无穷的。

Fuzzy set, Vague set and C(superscript *)-fuzzy set are extension of classical set theory. They are also results of fuzzy set theory development.

模糊集、Vague集和C-模糊集都是对经典集合论的扩展，同时又是模糊集合论分支的发展成果。

In chapter 2, basic knowledge of the rough set theory, such as indiscernibilityrelation, elementary set, approximate space, upper approximation, lower approximation, negative region, boundary region, rough set, etc., and algebraic properties of rough set are introduced. At the same time, the feature of the rough, set theory is also introduced.

第二章介绍了粗糙集理论基本知识，如不可分辨关系、基本集、近似空间、上近似、下近似、负域、边界域、粗糙集等概念，以及粗糙集的代数性质，同时还介绍了粗糙集理论的特点。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了