查询词典 copper bit

According to the results of this study and previous analyses, it is found that Pb concentration may be used to distinguish native copper in North America and historical European smelted copper.

更重要的是，根据本实验及前人的分析结果，我们发现铅含量可作为判断北美自然铜与欧洲冶炼铜的一个有效标准。

Goods whose export is banned by the State, including natural bezoar, musk, copper and copper-based alloys and platinum etc.

国家禁止出口的货物。包括天然牛黄、麝香、铜及铜基合金、白金等

We present a simple approach to determine the content of casein in crosslinked polyacylamide, i. e., protein molecules are complexed with copper ions by biuret reaction. The polymer containing proteins is cinerated at high temperature and then the residue is dissolved into nitric acid. Protein content is measured by determining concentration of copper ion in nitric acid solution using atomic absorption spectrum.

本文提出了一种在交联聚丙烯酰胺中测定酪蛋白的简便方法，即：利用双缩脲反应使蛋白质与铜离子络合，含蛋白质的聚合物在高温下灰化，残留物溶于硝酸，通过用原子吸收光谱测定硝酸溶液中的铜离子浓度来测量蛋白质的含量。

The viscosity and surface tension of blister copper and copper matte decreased with temperature.

随熔炼温度升高，铜锍和粗铜粘度和表面张力下降，渗透加剧。

Blister copper can be produced directly from standard copper concentrates using a cyclonic reactor operating at 1 500~1 600 ℃ with pure, technical oxygen.

在使用纯工业氧将温度控制在1500￣1600℃的情况下，用旋涡反应器可直接从标准铜精矿生产出粗铜。

This paper describes briefly necessity of improvement of smelting process in Jinchang Smelter,proves that the blister copper production is better to be fixed at 60000-70000t/a after medification from point of view of heat balance of blowing and gas treating capacity of acid - making system and proposes a way to exploring potential in blister copper production capacity in the future.

本文简述了金昌冶炼厂熔炼工艺改造的必要性，从转炉吹炼的热平衡、制酸系统处理烟气能力等方面论证了改造后粗用规模以60－70kt／a为宜，并简要提出今后粗铜能力挖潜途径。

Factory engaged in professional production and sales of high-speed automatic vacuum molding machine, high frequency plastic welding machine, blister sealing machine, the production of refined aluminum blister mold, copper mold, mold high-frequency, voltage-mode, copper engraving , the use of masks in Blister Packaging, PVC tape, transparent plastic boxes, CD sets, business cards of this, folders, jelly bag, such as soft PVC products, hardware products.

本厂从事专业生产销售全自动高速真空吸塑成型机，高周波塑胶溶接机，吸塑封口机，制作精致吸塑铝模，铜模，高周波模具，电压模，雕刻铜模，使用于吸塑罩包装，PVC胶带，透明胶盒，CD套，名片本，文件夹，果冻袋，等PVC软胶制品，硬胶制品。

A potted-spinach experiment was conducted to investigate the effects of four kinds of copper products,namely,Kocide2000,Bordeaux nutrition protective powder,Bordeaux mixture,copper sulfate and organic matter on the soil quality.

通过盆栽试验，研究了美国铜基杀菌剂K ocide2000、新型波尔多液营养保护剂、传统波尔多液、五水硫酸铜四种铜制剂及添加3%有机物料后对棕壤生化性质的影响。

Under the optimized conditions, the relative fluorescence intensity decreased linearly with the copper ions concentration in the range from 2 to 200μg·L~(-1) and the detection limit could reach 0.29μg·L~(-1). Based on the charge-transfer quenching mechanism, the copper ions bounding onto the surface of qdots could absorb electrons from valance band, which results in the quenching of fluorescence.

用电荷转移机制解释了量子点荧光猝灭的原因，主要是由于价带电子激发到导带以后被表面结合的Cu~(2+)离子捕获而产生的结果，在此基础上，用光解实验进行了进一步的验证。

Main contributions and results of this research include: The production of nano-copper brei from adequate selection of some accessory ingredients based on the technology of super-fine powder preparation and the fundamental of surface chemistry. Best composition of materials for making nano-copper brei was subsequently determined by a series of orthogonal experimental approaches.

本文的主要创新和研究成果体现在以下方面： 1、基于超碎粉体制备技术和界面化学基本原理，通过选择合适的助剂和物料研制出了纳米铜，并通过正交试验得出研磨时最佳的物料配比。

He's a pretty westernised kind of guy.

他是一个非常西化的人。

National spirit is the moral kingpin for a nation to realize common ideal and goal.

一、中华民族精神的基本内涵党的十六大报告指出：在五千多年的发展中，中华民族形成了以爱国主义为核心的团结统一、爱好和平、勤劳勇敢、自强不息的伟大民族精神。