查询词典 copper coin

In light of production practice, the author introduces some measures for reducing copper content of electric furnace slag to .8%: aplication of new type of concentrate nozzles, stabilization of flash furnace slurry, addition of coke powder to flash furnaces, control of the Fe/Si ratio of furnace slag, increasing the time for clarification of copper liquor, and addition of reductants, such as coal or pyrite.

结合生产实践，介绍了控制电炉渣含铜低于 0 。8%的几点措施：采用新型精矿喷嘴，稳定闪速炉炉浆；向闪速炉中添加焦粉；控制炉渣的铁硅比；增加铜液澄清时间；向电炉中加入还原剂煤块或黄铁矿等。

The main products of the company are ornamental materials of super copper , and it also produces swing door 、 auto sliding door 、 arc sliding door 、 technical fire door 、 and auger elevator ornament etc . it offers the ornamental copper for large basso ? relievo fresco 、 buddhism foundry and articles

公司是专业生产铜装饰材料及设计、开发、制造、施工为一体的企业，并承接建筑铜装饰工程及五星级酒店高档铜装饰项目，生产各种规格的旋转门、平滑门、别墅门、电控门、旋转护栏、屋顶防水瓦、浮雕壁画及铸造青铜器。

Study on Improvement of Recovery of Gold and Silver from the Copper Dross Smelting in Reverberatory Furnace;2. After that, the copper in leach liquor can be extracted with the ternary extractant mainly containing P204, and the gold and silver in leach residue can be recovered by a process of cyanidation-replacement of Z.

为避免硫酸烧渣对环境的污染，以硫酸烧渣为原料，通过添加活性还原剂，用废硫酸直接还原浸出铁并制铁黄，而后用以P2 0 4为主体的三元萃取剂萃取回收浸液中的铜，用全泥氰化和锌粉置换工艺从浸渣中提取金银，较经济有效地回收利用了烧渣中的有价金属，铁、铜和金的回收率分别达到了 93。

The synthesis of copper sulfide and copper selenide nano/micro hollow cages with uniform polyhedral and sphere shapes.

使用盐酸羟胺作还原剂时，得到八面体的Cu2O微晶，改变反应条件得到一维和立方体Cu2O的混合物及多孔颗粒。

Soldering of copper, brass, copper alloysgalvanized iron plain sheet.

铜及铜合金、镀锌铁皮的钎焊。

Soldering of copper, brass, copper alloys and galvanized iron plain sheet.

铜、黄铜、铁、镀锌铁皮的钎焊。

If copper sheeting costs $5 per square foot, the copper alone would cost $86,110,283.50 USD.

如果铜薄膜费用5美元，每平方英尺，仅铜的费用将达到86，110，283.50美元。

They immersed a lead object first in copper acetate (a compound made by letting vinegar corrode copper), and then in a silver solution created by dissolving silver chloride in dilute ammonia (which ancient chemists made from urine).

它们首先把铅制品浸没在醋酸铜（通过醋酸腐蚀铜而制得的化合物）中，然后放在银溶液中，银溶液是通过把氯化银溶解在稀释的氨水中而制得的。

The housing material is the PET glass fiber enhanced and anti-burning (V-0) imported insulation material; the material of the contact element adopts the red copper or the copper alloy; the material of the contact segment is the beryllium bronze, the surface of the contact element is glided or silver-gilt.

其壳体材料采用PET玻纤增强型、阻燃型（V-0）进口绝缘材料；接触件材料采用紫铜或铜合金；接触部分的材料为铍青铜，接触件表面镀金或银。

The form of copper occurrence in contaminated soil in a smeltery site was discussed comparatively by continuous chemical digestion,with the coefficient of biologic effectiveness to copper calculated.

采用化学连续浸提法对冶炼厂污染土壤中铜的赋存形态进行了比较分析，并且计算了铜的生物有效性系数。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。