Base materials for printed circuits ; part 3 : special materials used in connection with printed circuits ; specification 3 : permanent polymer coating materials solder resist for use in the fabrication of printed boards 印制电路用基材.第3部分:印制电路连接用特殊材料.第3号规范:制造印制电路板中用的永久性聚合物表面覆盖剂
So the project that many factories care for is how to improve the performance of a saw blade and prolong its life . the research on the sawing process of concrete has been less published at present 如何来提高锯切混凝土用锯片的锯切性能和使用寿命是许多厂家共同关心的课题，但目前国内外针对混凝土这种特殊材料的锯切研究却相对较少。
Furthermore , it makes an overall analysis about the series of compressors and units , each main performance level , construction features , application of peculiar material and the quality comparison with the oversea similar products 同时对压缩机和冷水机组系列化、各项主要性能指标、结构特点、特殊材料应用和与国内外同类产品水平比较等方面给出了全面分析。
Outholite skidproof fabric with high density is imported from atp company of usa . it is breathable and avoids midew forming in the middle layer due to the punched hole design . it is also shock absorbent to protect ankle 鞋垫高密度透气的outholite防滑材料由美国atp公司提供,冲孔设计促进鞋内空气循环，防止中间层霉菌的形成，特殊材料并具有吸震功能，有效降低脚部扭伤几率。
We be engaged in fabricating ansi ( unc , unf ) , international standard ( iso ) and china standard ( gb ) series of micro hollow - head setscrew with ultra high rigidity , micro screw with all spacial material , medical orthopaedics bolts , and precise machinery parts 生产美标unc 、 unf 、国际标准iso 、国标gb系列微型超硬度内六角紧定螺丝、各种特殊材料的微型螺丝、医用骨科螺钉、精密机械零配件。
The special material coating on the components in contact with the process medium protects them from attack by chemically aggressive medium , crni steels for the case and instrument flange also make these diaphragm gagues resistant to chemically aggressive environments 与生产介质接触的特殊材料外壳能够保护它们不受化学介质的腐蚀，铬镍钢外壳和安装法兰也使膜片压力表能够抵抗化学腐蚀环境。
The storage area should be separated according to the character of raw materials , material , semi - manufactured goods and finished product , if necessary , the refrigerators should be installed . the chemical articles , food additive should be kept by special people and special counter 应依原料、材料、半成品及成品等性质之不同，区分储存场所，必要时特殊材料应备有电冰箱（柜） 。化学物品、食品添加剂应由专人专柜保管。
The possibility of using infrared camera in heat transfer experiments was discussed and the various influential factors was analysed , such as the radiation ratio of materials , roughness of surface and the transmissivity of special materials for infrared ray transmission 摘要探讨了将红外成像仪用于传热实验的可能性，分析了几种影响因素：如被测实验件的材料、表面粗糙度，以及用于内流传热实验时需使用的能透过红外线的特殊材料的透射率等对实验结果的影响。
There are a good many actual significances for the miniaturization of microstrip antennas in the fields of modern communication , navigation , orientation , and electronic countermeasure , etc . the research and exploitation of compact antennas with high performance are becoming one of the hotspots in the antenna field 微带天线的小型化已成为现代通信、导航、定位、电子对抗等领域的研究热点之一。目前,国内外研究者已经提出了很多关于微带天线的小型化的实现方法,包括采用特殊材料、特殊结构或附加有源网络等。
This proof following enterprise already through the authentication , and has set up a file in the dongguan 114 nets industry and commerce enterprise database , inquires the more detailed enterprise material , please dial the dongguan enterprise information desk 96060 ( artificially ) 9686810114 billion ( to be automatic ) , this enterprise numbers for 49032 兹证明李记胶贴环保特殊材料已通过认证，并已在东莞114网工商企业数据库中备案，查询更详细的企业资料，请拨东莞企业查询台96060 （人工） 9686810114 （自动） ，该企业编号为49032 。
