铬

The hardenability of medium-temperature phase transformation of 290Cr8Si2 wear-resistant medium chrome cast iron is worse than that of 290Cr8Si1 medium chrome cast iron .

耐磨损290Cr8Si2中铬铸铁热处理中温相变的淬透性低于290Cr8Si1中铬铸铁。

A pilot study on the industrialized production of chrome pig iron was carried out in a small- sized blast furnace of 30m￣3 by using a sintered ore of chrome slag as flux.

采用铬渣烧结矿作为熔剂，在30m3小高炉上进行了冶炼含铬生铁的工业化生产试验。

The thesis focused on recycling of chrome leather wastes and transforming them into value-added products.

作为世界皮革加工中心，我国每年约产生70多万吨铬革渣，其主要成分为胶原蛋白和铬盐。

Chrome effluent ; chrome-tanned leather scraps ; recovery ; reuse

铬鞣废液；铬鞣革屑；回收；再利用

With only 2% chromium powder, the nano-composite tanning agent can thicken the leather by 124.5%, the shrinkage temperature reaches to 95 DEG C.; compared with a chrome tanned leather, a leather tanned by the nano-composite tanning agent has a tensile strength, peeling strength and elongation at break improved by 51.8%, 8.2% and 13.3% respectively, has no obvious stratification or sedimentation during over 12 months of storage period.

所述复合鞣剂只需配入2％的铬粉，就可使皮革增厚高达124.5％，收缩温度达到95℃以上；其鞣革相较于铬鞣革，革的抗张、撕裂强度分别提高了51.8％和8.2％，断裂伸长率也提高了13.3％，存放期12个月以上无明显分层和沉淀。

Iron alloy containing not less than 11% chrome Cr is called stainless steel. Austenitic stainless steel 300 series contains more than 17% of chrome and 18% of nickel, which makes it extremely corrosion resistant, therefore, widely used in building decorative system.

含铬Cr量不少于11%的铁合金一般被称为不锈钢，其中300系列的奥氏体不锈钢含铬Cr17%、镍18%以上，能提供极高的防腐能力，而被广泛应用于建筑装饰系统上。

Its synthesis and structure,its interaction with collagen and chromium complexes,as well as its effect on chrome tanning properties,have been studied.

主要研究了该改性剂的合成条件、结构、与胶原和铬配合物的相互作用以及用于改性后对胶原铬鞣性能的影响。

It was summarized that the research progress on Techniques of chrome-free and chrome- reduced combination tanning at home and abroad.

对国内外无铬少铬结合鞣的研究动态进行了综述。

The presented work deals with the application of chrome cake to prepare chrome tanning liquors.

本文研究工作主要是关于用铬饼制备铬鞣液及其应用。

There exist some unassailable problems in traditional chrome tanning, such as low exhaustion of chrome, salt pollution from pickling, and time-consuming process, etc.

传统浸酸铬鞣存在着一些不容忽视的问题，如：铬的吸收率低，浸酸时带来的盐污染，鞣制周期长等。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。