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copper是纯铜的意思，是一种纯金属。. brass是指黄铜，是由纯铜 (copper)和锌 (zinc)组成的合金 (alloy)。. 2、颜色不同. copper表面刚切开时为红橙色带金属光泽，单质呈紫红色，也叫做紫铜。. brass顾名思义，其表面颜色为金黄色。. 3、性质不同. copper有良好的导电性和 ...
brass是黄铜材质。. 是由铜和锌所组成的合金，常被用于制造阀门、水管、空调内外机连接管和散热器等。. 黄铜主要分两大类，普通黄铜、特殊黄铜。. 普通黄铜由铜、锌组成的黄铜，特殊黄铜由铅、锡、锰、镍、铝、铁、硅组成的铜合金。. 特性是强度高、硬度 ...
词汇辨析brass、copper和bronze. ①copper. copper是 纯铜，也就是直接开采出来的铜，俗称 红铜 或者 紫铜，古时候用的铜钱就是copper，元素铜的符号是Cu，这里指的就是copper。. 美剧中大家经常听到，警察被称为cop，相当于中文里的“条子”。. 其实cop这个词就是copper的 ...
Mar 5, 2016 · 铜的导电性比铁强。. Two widely used alloys of copper are brass and bronze. 黄铜和青铜是两种普遍运用的铜合金。. brass，bronze，copper有什么区别brass，bronze，copper有什么区别。. 区别是：brass美 [bræs]英 [brɑːs]n.黄铜；黄铜制品；铜管乐器组；黄铜饰品（尤指马挽具上的黄铜 ...
举报. brass、bronze、copper三个词有什么区别？. brass: [ brɑ:s ]；n. 黄铜,铜管（乐器）例句与用法: 1. How do you have the brass to say that? 你怎么有脸那么说呢？. 2. The brass is too loud. 铜管乐器的声音太响.
展开全部. “brass”是 黄铜 制品，黄铜材料。. 黄铜是由铜和锌所组成的合金，由铜、锌组成的黄铜就叫作普通黄铜，如果是由二种以上的元素组成的多种合金就称为特殊黄铜。. 黄铜有较强的耐磨性能，黄铜常被用于制造阀门、水管、空调内外机连接管和散热器 ...
Jun 7, 2006 · Oct 18, 2006. #8. Hello, There is a rule saying that, when people want to say "play a kind of musical instrument", they should use the article "the" before the instrument, such as "play the violin/ piano" etc. But I find on the net there are examples of both "play the guita" and "play guita". Why is that?
Jan 11, 2008 · The common coatings for steel are nickel, tin, chrome, brass and zinc. Zinc is dangerous to cook with and brass contains both copper and zinc. So brass and zinc are never used for canned goods. Nickel, tin and chrome are all safe for food preparation. But chrome is brittle and cannot be formed into cans.
May 1, 2012 · Random House Dictionary gives the following definition and examples: of no use. of no advantage or help: It's of no use to look for that missing earring. It's no use asking her to go. Also, no use. That's how I thought it worked: It's of no use + full infinitive OR It's no use + gerund.
Jul 5, 2009 · If "it" refers to a collective noun, then it can be singular or plural. 1. I have a bunch of paper. 2. I have a bunch of papers. The meanings are very close but the emphasis is a little different. In #1 you are emphasizing a large quantity of paper and quantity is singular. It #2 you are emphasizing many separate sheets of paper which is plural.
