英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
capellanus查看　capellanus　在百度字典中的解释百度英翻中〔查看〕
capellanus查看　capellanus　在Google字典中的解释Google英翻中〔查看〕
capellanus查看　capellanus　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • FR-4 - Wikipedia
    FR-4 glass epoxy is a popular and versatile high-pressure thermoset plastic laminate grade with good strength to weight ratios With near zero water absorption, FR-4 is most commonly used as an electrical insulator possessing considerable mechanical strength
  • FR4 Material Datasheet: Properties, Applications, and Specifications
    This article provides a comprehensive datasheet for FR4 material, covering its composition, properties, advantages, applications, and key technical specifications to help you make informed decisions for PCB manufacturing
  • FR-4_DataSheet-Rev1
    With high mechanical strength and exceptional electrical insulation properties in dry or humid environments, this material is versatile for various electrical and mechanical applications due to its ease of fabrication Need Additional Information? Contact Atlas Fibre Support for support for services and materials
  • The Ultimate Guide to PCB Board Material FR4: Properties, Density, and . . .
    While we have mentioned FR4 density in multiple sections, it is worthwhile to emphasize it once more FR4 density is typically between 1 8 and 2 0 g cm³ (or 1,800 to 2,000 kg m³)
  • What is the density of FR4 sheet? - ztelecgroup. com
    What effect does the density have on the fr4 FR4 sheet？ Within a certain range, high density means that the fr4 board structure is more uniform, reasonable and compact, that is, the quality is better
  • What is the density of FR4? - PCB MCPCB - EBest PCB
    What is the density of FR4?The density of FR4 generally ranges from 1 9g cm³ to 2 2g cm³ FR4 is a glass fiber epoxy laminate commonly used in PCB manufacturing
  • FR-4 Glass Epoxy Technical Product Information - Digi-Key
    FR-4 Glass Epoxy , designated FR-4 by NEMA, is a woven glass cloth construction laminate with an epoxy resin binder ( an 8 ply construction in 059'' thickness ) This material conforms to the requirements of military specification 13949, revision F, type GF, and is rated 94V-O by Underwriters Laboratories
  • FR4 PCB Material Specification Sheet (PDF) | 2026 Technical Selection . . .
    Density: Typically ranges between 1 8 and 2 0 g cm³, a value that balances structural robustness with weight efficiency—critical for applications like aerospace or portable electronics where weight is a constraint
  • What is the Density of FR4 Sheet? Complete Technical Guide
    What is the Density of FR4 Sheet? The density of FR4 sheet typically ranges between 1 70 to 1 90 g cm³ (grams per cubic centimeter), with most standard grades averaging around 1 85 g cm³





中文字典-英文字典  2005-2009