dipole-quadrupole interaction
偶极－四极相互作用
microwave triode and tetrode
微波三极管与四极管
SO(2) Duality Theory of Electric Quadrupole and Magnetic Quadrupole Radiation;
电四极和磁四极辐射的SO(2)对偶理论
three-dimensional quadrupole mass analyzer
三维四极质量分析器
beam-tetrode power amplifier
束射四极管功率放大器
triple tandem quadrupole instrument
三级串联四极质谱计
quadrupole residual gas analyzer
四极剩余气体分析器
gas chromatograph-quadpole mass spectrometer
气相色谱四极质谱仪
isovector quadrupole oscillation
同位旋矢量四极振荡
calar quadrupole oscillatio
同位旋标量四极振荡
gas-tetrode relaxation oscillator
充气四极管张弛振荡器
Tube tetrode (directly/indirectly heated cathode).
电子四极管(有直热式/旁热式阴极)。
Study of the 4ports 4polarizations Base Station Antennas for PHS;
PHS四端口四极化基站天线的研究
Tube tetrode with directly or indirectly heated cathode.
具有直接或间接加热的阴极的电子管四极管。
after that, she chopped down the four feet of a giant turtle and stabilized four polarities of the earth with them.
她砍下了大龟的四只脚立稳了大地的四极;
A tetrode with grid and plate potentials so arranged that plate current decreases when plate potential increases.
负耗阻性管由栅极和极板电势组成的四极管，其中当极板电流降低时极板电势反而增加
God will bless us, and all the ends of the earth will fear him.
神要赐福与我们．的四极都要敬畏他。
a thermionic tube having four electrodes.
有四个电极的热离子管。