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multi hole directional drilling 多开眼定向钻井
Solution of field distribution in stripline directional coupler[J]. 引用该论文石德万;王文祥;宫玉彬;魏彦玉.
Nonlinear Directional Coupler (NLDC) is a switch used in optical network. W. 非线性定向耦合器(NLDC)是用在光网络中的光开关器件，它主要用在全光网络中，W.
Machining of PCB(printed circuit board) is a typical process of two dimensional multi hole. 印刷电路板PCB的加工是二维多孔数控钻的典型。
An X-band directional coupler is designed and tested,and the experimental result agrees well with theoretical curve. 在三厘米波段对实验样品的测试结果与理论结果相符。
Moreover, the photorefractive effects of straight waveguides are measured, and so is the directional coupler of MILO. 由于操作于短波段，笔者亦尝试量测该两种直波导的光折效应，并另外量测了镁诱锂式方向耦合器的光折效应。
In this paper, we measured the thermal resistance of multi hole brick, designed external insulation wall and calculated the thermal resistance and the thickness of insulation mortar, which can save energy by 50% in Lianyungang. 试验测定了连云港地区几种多排孔封底砌块的热阻，并在此基础上设计和计算了寒冷地区节能50%25的几种外保温复合墙体的热阻及聚苯颗粒保温砂浆厚度。
Above 2 years design experience in RF filter, inductor, diplexer, balun transformer, combiner, splitter, directional coupler and other similar devices. 一年以上RF滤波器,电感器,双工器,平衡变压器,组合器,分离器,定向藕合器和其他类似RF部件设计经验
Deep hole directional fracture blast were used in rock entry,which decreased the size of debris,raise the quality of entry and brought economic benefit. 在岩巷中运用周边定向断裂爆破技术,减少了矸石粒度,提高了巷道成形的质量,并且创造了可观的经济效益。
A method of designing a directional coupler from the TE_(01) mode in circu-lar waveguide to the fundamental mode in rectangular waveguide is presented in thispaper. 提出了一种从圆波导 TE_(01)模到矩形波导 TE_(10)模的定向耦合器的设计方法。
With design experience or knowledge in RF filter, inductor, diplexer, balun transformer, combiner, splitter, directional coupler and other similar devices preferred. 具备RF滤波器，电感器，双工器，平衡-不平衡变压器，组合器，分离器，定向耦合器及其他元器件设计经验或知识更佳。
The characteristics of the switching curves of Gaussian-Constant-Gaussian varying coupling coefficient nonlinear directional coupler (GCG NLDC) are analyzed in detail. 研究了高斯常数高斯平滑连接的复合型变耦合系数定向耦合器的开关特性曲线。
In the paper, some factors are studied such as ratio of soliton and signal wavelength, linear refractive-index of media and coupling length which have influence on the performance of the steerable all-optical directional coupler. 研究了孤子波和信号光波长之比、器件长度及介质的线性折射率对光控可变定向耦合器性能的影响。
Based on the guidemode characters of dark spatial soliton waveguides and the theory of coupling between two waveguides, a kind of steerable all-optical directional coupler using dark spatial soliton waveguides is suggested. 摘要基于空间暗光孤子诱导波导的模式特性以及光波在波导间耦合理论，提出了一种实现光控可变定向耦合器的方法。
His strength in a crisis is an ace in the hole. 临危不惧是他的看家本领。
The principle and design of a novel microstrip directional coupler are presented.The error performance of the microwave phase discriminator (MPD) based on the directional coupler is also investigated. 摘要介绍了一种新型微带定向耦合器的原理和设计方法，给出了采用这种新型定向耦合器的微波鉴相器设计，并得到其误差性能的测试方法和测试结果。
A three-dimensional beam propagation method based on the Galerkin method (3D-GM-BPM) is proposed for directly modeling a parallel directional coupler based on optical rib waveguides. 摘要提出了基于伽辽金法的三维光束传播法(3D-GM-BPM)，可直接应用于三维波导光电子器件的光波传输模拟，并用它模拟分析了基于脊形光波导的平行定向耦合器的光波传输特性。
He chiseled a hole in the door to fit a new lock. 他在门上凿了个孔，以便装一把新锁。
The bird picked a hole in the ice with its beak. 那鸟在冰上啄出了一个洞。
The child has picked a hole in his new jumper. 孩子的新毛衣上勾了一个洞。