By reducing bromine content and adding aluminum hydroxide in the surface of substrate for the printed circuit board , comparative tracking index ( cti ) of the substrate is improved significantly , meanwhile the size stability , heat resistance , the glass transition temperature of the substrate are improved too 摘要通过降低印制电路板的基板表层的嗅含量并加入氢氧化铝，显著提高了基板的相比漏电起痕指数( cti ) ，并同时提高了基板的尺寸稳定性、耐热性、玻璃化温度。
After analyzing purple soil sampled from neijiang , leshan ofsichuan provinec and yuanmou of yunnan province , the contrast results of microbe quantity feature between surface and subsurface purple soil were obtained as follows . the content of soil organic matter , total and available nitrogen , phosphorous and potassium of surface was higher than subsurface , not relating to the type of purple soil and soil utilization way . the quantity of microbe _ bacteria , actinomyces and mould in surface purple soil was higher than subsurface , which indicated that the organic matter and airy condition in surface soil was more suitable for microbes growing . there was the same tendency in profile change of microbe quantity in purple soil located in temperate _ humid climate of sichuan basin in contrast with dry _ hot climate of yuanmou , yunnan . the nutrient situation of purple soil in sichuan basin shown that state of surface was better than subsurface , while in yuanmou of yunnan the state was on the contrary due to the degradation of surface soil 实验室对四川内江、乐山和云南元谋不同类型紫色土表层和亚表层微生物数量特性的比较分析表明：土壤有机质、氮磷钾全量及其速效量均表现为表层高于亚表层，与紫色土类型和利用方式无关；三大类土壤微生物细菌、放线菌和霉菌数量均表现出表层高于亚表层，表明紫色土表层的有机质和通气性优于亚表层，适宜于这三大类微生物生长；温湿气候条件下的四川盆地和干热气候条件下的云南元谋其紫色土微生物数量的剖面变化具有相同的趋势，唯土壤营养状况在四川盆地紫色土中表现为表层优于亚表层，而在云南元谋紫色土中由于表层土壤的退化作用表现为亚表层优于表层的相反情况。
The utility model discloses a luminescent computer keyboard key , which comprises : a key body ; a concave groove , which is arranged on the top of the key body and is used for embedding phosphor powder display character layer under night light and transparent protection surface layer ; after embedding into said groove , the surface has a transparent protection layer with thickness leveled as top face of the key body 本实用新型公开了一种夜光计算机键盘按键，该按键结构包括：键体；键体顶面设置的供镶嵌荧光粉夜光显示字符层及透明保护表层的凹槽；具有镶入所述凹槽后，其表面与键体顶面平齐的厚度的透明保护层。
The theory of teaching of reading characterized by experience requires the teacher to guide the students to obtain development which goes through three stage : the primary stage of total perception , the junior stage of appreciation and ponder and the senior stage of individual creation 体验式阅读教学要求教师引导学生由表层的整体感知逐步向深层的体味感悟以及更深层次的个性创造逐层深入；以获得最终发展。其中，整体感知是起点，体味感悟是核心，个性创造是目的。
Permeable durability reinforcing agent used for concrete surface is a material sealing surface of concrete , and it can permeate into inner of concrete and fill or block the pores of concrete surface with dry crystal or emulsoid generated by reaction between it and chemical compound in concrete 混凝土表面用渗透型耐久性增强剂是一种针对混凝土表面的渗透封闭型材料,其可渗入混凝土内部,并通过干燥结晶或与混凝土内部相关物质反应生成乳胶体将混凝土表层的孔隙填充、堵塞,对已有混凝土结构的防护具有重要意义。
Doing so revealed a hydrophobic meaning water - repellent tip that allows the viral harpoon to latch on more securely to the cell membrane , which is also hydrophobic . it also provided researchers with more insight into the dramatic structural change that the f protein undergoes while performing its task . when not in use , the f protein looks like a mushroom , and its hydrophobic tip is folded into a compact form , safely hidden inside the cap 在没有碰到人体细胞时， “副流感病毒5型”细胞表层的“融合蛋白”看起来就像一个蘑菇，防水顶端严密封闭，且安全地藏在蘑菇帽子下面当病毒接触到人体细胞时，蘑菇帽子会突然破裂开来，防水顶端也像鱼叉一样暴露出来，并陷入人体细胞膜内。
The latest domestic and foreign achievements on anti - skidding surface of asphalt pavement were collected in this paper , and the major problems on grade design in our country were also thoroughly analyzed . according to systematic analysis on anti - skidding mechanism of asphalt pavement surface , the paper introduced the concept of reference point and forbidden zone of superpave technology to control grade curve " s trends and discussed the influence on pavement surface " s ability of anti - skidding and durability 论文汇集了国内外沥青路面抗滑表层的最新研究成果，深刻剖析了我国现有抗滑表层级配设计的主要问题，在此基础上，通过对沥青路面抗滑机理的系统分析，引入superpave技术的控制点和禁区概念来控制抗滑表层混合料级配曲线的走向，研究了该技术对路面抗滑能力和耐久性的意义。
The utility model discloses a luminescent computer keyboard key , which comprises : a key body ; a concave groove , which is arranged on the top of the key body and is used for embedding phosphor powder display character layer under night light and transparent protection surface layer ; after embedding into said groove , the surface has a transparent protection layer with thickness leveled as top face of the key body 摘要：本实用新型公开了一种夜光计算机键盘按键，该按键结构包括：键体；键体顶面设置的供镶嵌荧光粉夜光显示字符层及透明保护表层的凹槽；具有镶入所述凹槽后，其表面与键体顶面平齐的厚度的透明保护层。
Sitting by the fire in the house - keeper s room , i approached that island my fancy , from every possible direction ; i explored every acre of its surface ; i climbed a thousand times to that tall hill the call the spy - glass , and from the top enjoyed the most wonderful and changing prospects 坐在管家房里的壁炉旁，我在幻想中从每个可能的方向到达了那个岛我探索了它表层的第一亩土地我上千次地爬上了那个他们叫做望远镜山的高山，还从山顶饱览最为瑰丽变幻无穷的风光。
In this article , with the approach of systematic analyse , the author tried to explain the systematic background of those bad assets , and after doing that , gives some advice on how to do with it the continuous emergence and great accumulation of bad assets used to be taken as the result of the government s reforming of the investment & financing system ( ifs ) . but , with a review of the changing process of the ifs and the government s finiancial policies , the author will not agree with the take - for - granted opinion just mentioned 有些人将不良资产的不断产生与大量积累的原因归结于“投融资体制的改革过程” ，但笔者认为这只是直接和表层的原因解释，它仅能从数量上说明不良资产的来源、从历史上说明产生的时间。回顾作为我国经济主体的国有企业、银行二十年的改革历程，仍然停留在一种形式上或外延性的改革阶段，一些深层次的矛盾虽然已经暴露，但还未得到根本性的解决。
