- 更多网络例句与接地层相关的网络例句 [注:此内容来源于网络,仅供参考]
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Paleo links; Invertebrate fossils; Ammonites; Jellyfish; Nautiloid fossils; Trace fossils; Dinosaurs; Mosasaurs; Stratigraphy
古生物学网站链接;无脊椎动物化石;菊石;水母;鹦鹉螺目软体动物化石;跟踪化石;恐龙;沧龙;地层学
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A small planar antenna combined with a printed circuit board. First and second ground layers formed on top and bottom surfaces of the dielectric layer, respectively, corresponding to each other; and a first antenna unit which extends from a side of each of the respective first and the second ground layers, for radiating a first polarized wave with the application of current.
一种与印刷电路板组合的小型平面天线,在具有预定厚度的介电层的顶表面和底表面上形成相对应的第一和第二接地层,第一天线单元和第二天线单元分别以预定图形从第一和第二接地层的一侧伸出,分别通过施加电流来辐射正交的第一极化波和第二极化波。
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The idea that the casing shoe resistance and the crushing strength of the LCM must be considered when design the density of the drilling fluids is presented. It holds that the surface pressure should be junior to the crushing strength of LCM, in order to prevent the formed bridge plug from crushing.
提出设计井内堵漏钻井液密度时,必须同时考虑套鞋处破漏压力和桥接材料的抗压强度对井内压力的限制;认为提高压力敏感性裂缝地层承压能力的堵漏作业时,井口压力应不超过桥接材料的抗压强度,以保证裂缝内已形成的堵塞隔墙不被破坏。
- 更多网络解释与接地层相关的网络解释 [注:此内容来源于网络,仅供参考]
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bailer:汲筒
本法是利用钻绳连接钻具,靠钻头的上下冲击作用钻凿地层,经一段时间之后,用汲砂绳(Sand lines)接汲筒(bailer)将岩层取出使井内清净后,又下钻头,如此反覆进行至钻达目标后,才套管及进行完井工作.
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joint:接缝
潜盾隧道系一种在隧道轴向及环向均有接缝 (Joint) 的地下结构物,由於衬砌环片之结构设计法 ( 应力分析 ) 仍未确立,设计时必须适切地评估衬砌环片结构与地层之互制行为,以达设计之经济性及合理性.
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ground plane:接地层
负参考连接至引脚2,且该引脚必须通过接地层(ground plane)直接连接至地,从而将印制电路板(PCB)的接地电感降至最低. 为将寄生电感降至最低,尽可能缩短走线(trace)长度也非常重要.
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ground plane clearance:接地层隔离
79、接地层:ground plane | 80、接地层隔离:ground plane clearance | 81、电压层:voltage plane
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ground plane clearance:接地空环
ground plane 接地层 | ground plane clearance 接地空环 | hackers 骇客
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ground plane clearance:接地空环 返回顶部
ground plane 接地层 | ground plane clearance 接地空环 返回顶部 | hackers 骇客
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strip line:条线
但对电路板这种信号线(Trace)远比接地层要细长的情况,则可以用微条(Micro strip)或条线(Strip line)的模型来估算. 对于走在外层的信号线,以微条的公式 :除此之外,也不要忽视贯穿孔(Via)的影响. 一个贯穿孔会造成24 ps左右的延迟,