“built-up beam”的概念、定义、翻译、参考文献-科学参考

单词	built-up beam
释义	built-up beam [`bilt´ǝp `bēm] ^ENGINEERING A structural steel member that is fabricated by welding or riveting rather than being rolled.
随便看	crystal chemistry crystal class crystal clock crystal control crystal-controlled oscillator crystal-controlled transmitter crystal counter crystal current crystal cutter crystal defect crystal detector crystal diffraction crystal-diffraction spectrometer crystal diode crystal dynamics crystal face crystal field theory crystal filter crystal form crystal glass crystal gliding crystal grating crystal growth crystal habit crystal harmonic generator

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