This paper discusses the variational method of extrme value probelm of functional of more than one functions,changes the isoperimetric problem of functional of more than one functions to unconditional extrem value problem by using Lagrange′s method of multipliers,and gives the solution of this problem′s polar strip by using variational method.
先讨论含有多个函数的泛函的极值问题的变分方法，然后用拉格朗日乘子法将含多个函数的泛函的等周问题转化为相应的无条件极值问题，并用变分方法给出此类等周问题的极带的解法。
Study on high-speed surfacing process with strip of 75 mm in width;
75mm宽带极高速堆焊工艺研究
This paper describes the basic conditions for electric slag cladding process with Ni-base alloy strip, raises a complete set of electric slag cladding process with INCONEL 690 Ni-base alloy Strip including test plate, welding materials, standard Properties and necessary auxiliary process meadures, and analyzes the factors affecting the cladding quality.
讨论了实现镍基合金带极电渣堆焊工艺的基本条件，提出了一套完整的INGONEL690镍基合金带极电渣堆焊工艺，包括试板、焊材、规范参数和必要的辅助工艺措施，并分析了有关影响堆焊层质量的因素。
Using a new microcomputer controlled strip overlay welder and providing suit-able welding current,voltage ,and speed, the influenee of magnetic poles position and mag-netically controlled current on the appearance of weld is investigated for the electro-slag sur-faeing and the high speed surfacing with 75 mm strip.
利用新研制的微机控制带极堆焊设备，在满足工艺要求的焊接电流、电压和焊接速度等参数下，研究了磁极位置和磁控电流对７５ｍｍ宽带极电渣堆焊和高速带极堆焊焊缝成型的影响规律。
Theoretical analysis and experimental research on bipolar charging phenomena and electrostatic potential distribution in gas-solid fluidized beds were carried out.
对颗粒的双极带电现象和气固流化床中的静电分布进行了理论分析和实验研究。
Pure copper coating deposited by automatic plasma welding with melting strip electrode technology;
熔化带极自动等离子熔敷焊接纯铜技术
Macquarie Island and Davis Station is located at the centre and the edge of auroral oval respectively.
麦阔里岛和戴维斯站分别位于极光带中心和极光带极向边缘区内.
belt electrode and arc-electrode
陀螺球带电极和弧电极
An electric terminal with positive polarity.
带正极性的一个电极
pigtailed laser diode
带尾纤的激光二极管
uncharged polar amino acid
不带电的极性氨基酸
the Arctic, desert, tropical, etc regions
北极、 沙漠、 热带等地区
pigtailed photodiode
带尾纤的光电二极管
She took great comfort from the former.
前者给她带来极大安慰。
They explored the Arctic regions.
他们探测过北极地带。
auroral zone blackout
【地物】极光地带中断
The polar region is the habitat of the polar bear.
北极地带为北极熊的栖息地。
Large operator with superscript and subscript limits
带上标极限和下标极限的大型运算符
Belt drives--Pulleys--Limiting values for adjustment of centres
GB/T15531-1995带传动带轮中心距调整极限值
Wideband Dual-frequency and Dual-polarization Microstrip Antenna Array at Ku-band
Ku波段宽带双频双极化微带天线阵
Bandwidth Performance Analysis of the Ultra-wideband Circular Disc Monopole Antenna
超宽带圆片单极天线的带宽特性分析
Design of a Novel Broadband Circular Polarized Microstrip Antenna
一种新型宽带圆极化微带天线的设计
Design of the Ultra-broad Band Circular Polarization Microstrip Antenna Array
超宽频带圆极化微带天线阵列的设计
The two hydrogen atoms form a polar molecule, that is, one with a slightly positive end and one with a slightly negative end.
两个氢原子构成了一个极性氢分子,一个略带正极,一个略带负极.