四晶体管收音机 Four Transistor Radio
四晶体X射线光谱仪 four crystal X-ray spectrometer
四方晶系 Tetragonal crystal system ; [晶体] tetragonal system ; Tetragonal
四晶的 [化学] tetramorphous
及四晶 RGBY
四晶现象 tetramorphism
晶体四极管 [电子] crystal tetrode ; [电子] tetrode transistor
结晶四氯化锡 Stannic chloride Pentahydrate ; Stannic chloride hyd ; Stannicchlorid
四极场效应晶体管 tetrode field effect transistor ; field effect tetrode
通过四晶X射线衍射、化学腐蚀、光学显微、透过光谱以及原子力显微镜对晶体的质量进行了表征。
The crystal was characterized by four-crystal X-ray diffraction, chemical etching, optical microscope, transmission spectra and atomic force microscope (AFM).
显示的晶须是四分位间距的1.5倍。
第一款晶体管收音机-丽晶TR - 1(Regency TR-1),1954年以49.99美元的价格面市,其中包含四个晶体管。
The first transistor radio, the Regency TR-1, went on the market for $49.99 in 1954. The radio contains four transistors.
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