铜的

The resistivity of iron is almost six times as much as that of copper.

铁的电阻率几乎是铜的6倍。（或译成：铁的电阻率几乎比铜的大5倍。

Aiming at the quality of copper(HSn-70A),the corrosion inhibition capacity of single PESA is studied. Its composite prescription is developed. The optimum composite scheme is selected as 10 mg/L PESA+ 0.5 mg/L BTA+2 mg/L Zn2++ 10 mg/L sodium gluconate. The corrosion rate of copper is only 0.000 5 mm/a under this condition.

针对凝汽器铜材质(HSn-70A)研究了单一聚环氧琥珀酸的缓蚀性能，开发了与之复配的复合配方，筛选出的最佳复配方案为10 mg/L PESA＋0.5 mg/L BTA＋2 mg/L Zn2+＋10 mg/L葡萄糖酸钠，在此条件下铜的腐蚀率仅为0.000 5 mm/a。

O?C?Cu isotopes. revealing that the mixed hydrothermal fluid of magmatic water and meteoric water reactivated the ore elements in the carbonate rocks and quartz diorite. Copper was transported, as Clcomplexes in the ore fluid and precipitated to enrich and thicken the primary sedimentary protore.

认为该矿床是在岩浆水和后期少量大气水的加入而形成的混合热液共同作用下，活化碳酸盐岩地层和石英闪长岩中的铜等成矿元素，形成含矿热液，并以铜的氯络合物方式运移，在弱还原性条件下使原始沉积矿胚层加厚变富。

With a high accuracy, the biuret in compound fertilizer is determined from the color reaction between biuret and copper by copper double salt spectrophotometry, meanwhile the remove of PO43-,Ca2+, Mg2+and NH3 interferences is described without other and new interfering matters.

利用缩二脲铜的色泽反应，采用铜复盐分光光度法测定复合肥中的缩二脲，并介绍除去PO43-，Ca2+，Mg2+，NH3干扰的方法，并且在此过程中不能引入新的干扰物质。该方法精密度较好。

Compound lead salt stabilizer to further enhance the thermal stability in order to reduce the amount of resin in the unit: Organic tin heat stabilizer dibutyltin in greater toxicity, are not suitable for plastic heat stabilizer; Mercaptans by organotin anti - Cu-poor, it is not appropriate in the wire, cable products, but no contact for copper products is no problem; lead salt-type heat stabilizer in most industrial countries are being banned or restricted.

复合铅盐稳定剂应进一步提升热稳定性能，以减少在树脂中的单位用量：有机锡热稳定剂中的二丁基锡毒性较大，不适宜用作塑料热稳定剂；硫醇类有机锡因抗铜性差，不适宜在电线、电缆制品中使用，但用于不接触铜的制品是没有问题的；铅盐类热稳定剂在大多数工业发达国家正在被禁用或限用。

The salzburg vitriol preparation, the sulfuric acid four ammonations coppers preparation and the correlation product nature experiment carries on the conformity, constructs the copper element the synthesis experiment system.

将五水硫酸铜的制备、硫酸四氨合铜的制备及相关产物的性质实验进行整合，构建铜元素的综合实验体系。

The salzburg vitriol preparation, the sulfuric acid four ammonations coppers preparation and the correlation product nature experiment carries on the conformity, constructs the copper element the synthesis experiment system.

生活小百科网：将五水硫酸铜的制备、硫酸四氨合铜的制备及相关产物的性质实验进行整合，构建铜元素的综合实验体系。

Until fairly recently, the only way to extract pure copper from ore was by using a process that requires large amounts of electric energy, especially if the proportion of copper in the ore is low.

直到最近，从矿石中提取纯铜的唯一方法是通过一种需要大量电力的流程，特别是当矿石中铜的比例比较低的时候。

Until fairly recently, the only way to extract pure copper from ore was by using a process that requires large amounts of electric energy, especially if the proportion of copper in the ore is low.

直到最近，从矿石中提取纯铜的唯一方法是通过一种需要大量电力的流程，非凡是当矿石中铜的比例比较低的时候。

Until fairly recently, the only way to extract purecopper from ore was by using a process that requires large amounts of electricenergy, especially if the proportion of copper in the ore is low.

直到最近，从矿石中提取纯铜的唯一方法是通过一种需要大量电力的流程，特别是当矿石中铜的比例比较低的时候。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。