查询词典 chromium

Rare metals which have strontium, chromium, barium, gold, silver and so on.

其中稀有金属有锶、铬、钡、金、银等。

Chromium was first discovered in the Siberian red lead ore in 1798 by the French chemist Vauquelin.

铬 最早是由法国化学家 Vauquelin 于1798年在西伯利亚赤铅矿石中发现的。

The results showed that abrasion resistance of refiner plate made of high chromium cast iron was better than that of the stainless steel material.

通过对热磨机的磨盘材料不锈钢和高铬铸铁的耐磨性对比研究表明，高铬铸铁比不锈钢有更好的耐磨性。

Firstly, the transformation regularness of the mercury and chromium species was described, and the influencing factor, the intrinsic physics and chemical properties of trace element itself, combustion conditions (include temperature and atmosphere) and the chlorine concentrations in the flue gas.

本文以痕量元素中毒性较大的汞和铬为研究对象，利用化学动力学的方法对燃煤过程中痕量元素的形态转化规律及其影响因素进行了分析研究。

Heredity ; high chromium cast iron ; remelt ; insulation ; properties

遗传性；高铬白口铸铁；重熔；保温处理；力学性能

Micstructure and properties were investigated and dertermined. The results show that carbide structural inheritance of high chromium cast iron is obvious after remelt; carbide struc- tural inheritance was reduced with remelt times increasing; insulation can improve the carbide structural inheritance, but the longer insulation time was, the thicker ...

结果表明：高铬白口铸铁中的碳化物经过重熔仍存在明显的遗传现象；随着重熔次数的增加，碳化物组织遗传效应减弱，力学性能下降；保温处理可以改善碳化物的组织遗传性；过长的保温时间导致碳化物变得粗大，高铬白口铸铁的力学性能下降。

The invention provides the flux-cored wire for welding the duplex stainless steel, 17 percent to 24 percent flux-cored powder is filled into stainless steel belt. The invention is characterized in that the mass percent of the components of the flux-cored is as follows: 35 percent to 40 percent of chromium powder, 11 percent to 15 percent of molybdenum powder, 2 percent to 4 percent of nickel powder, 3 percent to 5 percent of manganese powder, 1 percent to 5 percent of magnesia chrome, 1 percent to 3 percent of ferrosilicon, 4 percent to 9 percent of rock crystal, 2 percent to 6 percent of feldspar, 21 percent to 30 percent of rutile, 0.5 percent to 4 percent of Al2O3, 0 percent to 5 percent of zircon, 0.5 percent to 3 percent of Bi2O3, and 0.5 percent to 3 percent of manganese nitride.

一种用于焊接双相不锈钢的药芯焊丝，将药芯粉末以17～24％填充在不锈钢带内，其特征在于，所述的药芯质量百分比成分如下：35～40％的金属铬粉，11～15％的金属钼粉，2～4％的金属镍粉，3～5％的金属锰粉，1～5％的铝镁合金，1～3％的硅铁，4～9％的石英，2～6％的长石，21～30％的金红石，0.5～4％的Al 2 O 3 ，0～5％的锆英石，0.5～3％的Bi 2 O 3 ，0.5～3％的氮化锰。

Roup of corrosion resistant steels containing at least 10.5% chromium and may contain other alloying elements.

含铬量最低在10.5%，可能也含有其他合金元素的抗腐蚀钢铁。

The traditional chromium plating has carried through according to the technology of Sargent.

由于Sargent电镀铬工艺存在阴极电流效率低，分散能力和深镀能力差，以及六价铬离子带来的对操作工人身体的危害和严重的环境污染等问题，近年来发展了三价铬电镀工作。

OBJECTIVE: To study the artifacts of hard cobalt-chromium casting alloy, soft Co-Cr casting alloy, gold alloy and 3 kinds of metallic materials in head and neck scan sequence.

目的：观察硬质钴铬铸造合金、软质钴铬铸造合金、金合金3种金属材料在5种不同头颈部扫描序列中的伪影。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。