Marcasite occurs worldwide . rich supplies of it are especially found in the united states in missouri and kansas and also in the countries of mexico and guanajuato . the legend 18世纪后期， “ mrcasite ”由皇室流传到民间，并在整个欧洲广泛流行， “ mrcasite ”那永不退色的独特光芒，深受人们喜爱。
Her artfully created verses sometimes depict strong passion that s usually associated with stories of worldly love , while other times express the purity and wholeheartedness of divine compassion , which is eternal and boundless 诗人清海无上师洋溢着爱的情怀，其诗句时而浓厚拨动着世人醉迷的爱情，时而表叙深刻的真情，永不退色的广阔胸怀。
Thus , such phenomena as vermilion turning black , aging of red lead and the fading of arsenic can now be more essentially represented by the chemical reactions of cinnabar having its crystal lattice transformed , lead tetroxide turned into lead dioxide , and arsenic sulfide turned into arsenic oxide 于是，朱砂变黑，铅丹老化，石黄退色等现象，便可以用硫化汞转变了晶格，四氧化三铅变成了二氧化铅，硫化砷变成了氧化砷来更本质地加以表述了。
We will mount the historical photographs on acid - free or low alkaline paper . then the photographs can be stored inside archival boxes which are acid - free or low alkaline . this can prevent the contamination of the surface of photographs by dirt particles and wrapping paper that may lead to the chemical reaction like oxidation , yellowing and colour fastness 部份藏品如历史图片及明信片更需要特别的保护，博物馆会使用不含酸性或低硷度的纸张及纸板装裱历史图片，再存放于不含酸性或低硷度的纸盒内，防止图片上药膜受到空气及一般包装纸的杂质污染而产生化学作用，如图片氧化、变黄、退色等。
The following new knowledge are acquired : a ) the cu background of stratum and jinningian alkali basite is abnormal high , which could be liberated from those rocks during alteration . cu et al . minerogenetic elements , which main came from magmatic rock , some from stratum ( yinmin formation and luoxue formation ) and its basement rocks 矿床中cu等成矿物质来源复杂，以深源为主，部分来源于地层(因民组紫色层和落雪组白云岩)及基底地层；矿区内的退色蚀变作用可能是混合流体碱质交代改造作用的结果，对铜矿形成影响明显，是铜矿化的标志； 2
Two or three water towers , the backs of two or three steel frames for billboards , perhaps a spire or two , and a stretch of asphalt roofing material and bricks going up in square , sharp , vertical outlines without any form or order , sprinkled with some dirty , discolored chimneys and a few washlines and crisscross lines of radio aerials 两三座水塔，两三个钉广告牌的铜架，一两座尖塔，一望相连的沥青的屋顶材料和砖头，形成一些四方形的、矗立的、垂直的轮廓，完全没有什么组织或次序，点缀着一些泥土，退色的烟突，以及几条晒着衣服的绳索和交叉着的无线电天线。
Color - painting is of two sorts : overglaze painting and underglaze painting . overglaze painting , with five - colored painting or fencai as its example , is to outline patterns with zhuming pigment and to fill them with various colors on the already glazed surface of the porcelain , before it is placed into a closed oven for a further baking at a compar - atively low temperature from 700 to 800c . underglaze painting is to paint with qinghua , underglaze red and other pigments on the body before it is glazed . its feature is that all the colors are under the glaze formed at high temperature and thus will never fade away 釉上彩如五彩粉彩等，是在已烧成瓷的釉面上描绘纹样填彩，再入红炉以低温烧烘，温度约700 - 800度。此外，烧窑前即在坯体素胎上绘画，如青花釉里红等，则称为釉下彩，其特点是彩在高温釉下，永不退色。
And looking down into a street , i see again a stretch of gray or discolored red brick walls , with tiny , dark , uniform windows in uniform rows , half open and half hidden by shades , with perhaps a bottle of milk standing on a windowsill and a few pots of tiny , sickly flowers on some others 我俯视街道，又看见一列灰色或退色的红砖的墙壁，墙壁上有成列的、千篇一律的、阴暗的小窗，窗门一半开着，一半给阴影掩蔽着，窗槛上也许有一瓶牛乳，其他的窗槛上有几盆细小的病态的花儿。
In 1999 we introduced a complete set of advanced equipment which perform excellently in massive production to produce high grade long fleece fur . so today we are working along with both lines - one is for the high grade fleece fure and the other is for the middle grade fleece fur , either being subdivided into high 1999年我厂引进了大批性能优良的成套设备，生产提花、海派、仿兽毛、毛尖退色、染色等高档大毛皮，现我厂大毛皮、小毛皮双管齐下，高中低档产品花色繁
Ceo22 is used as optical materials , polishing agents , ultraviolet absorption materials , the cleaning catalyst of car ' s waste gases , chemical decolorant of glass , radiation - resisting glass permanent magnet , electronic ceramics etc . if it is processed into nanoparticles , it will exhibit some novel properties led to varied applications . for example , ceo22 nanocrystal is a better promoter of cytochrome c and the stabilizer of zro22 ceramics . because of its high index of refraction and good stability , it is used to produce reduced reflection film Ceo _ 2是一种廉价而用途极广的材料，如用于发光材料、抛光剂、紫外吸收材料、汽车尾气净化催化剂、玻璃的化学退色剂、耐辐射玻璃、永磁体、电子陶瓷等，其纳米化后将出现一些新的性质及应用，如ceoz纳米晶是细胞色素c的良好的催进剂，还用作zro :陶瓷的稳定剂，由于ceo :折射率高，稳定性好，常用于制备减反射膜等。
