科学时代-面向大众传播科学知识、科学方法、科学精神和科学思想的科学普及平台。

科学时代收录了3405121条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

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secondary text alternative	secondary theme	secondary thermal relay	secondary thickening	Secondary thickening
secondary thinking process	secondary thirteenth	secondary thrombocytopenic purpura	secondary tide	secondary tides
secondary tide station	secondary tillage	secondary tillage equipment	Secondary tissue	secondary tissues
secondary topsheet	secondary torsion	secondary tracking and illumination radar	secondary tractus olfactorius	Secondary trading area
secondary trait	secondary transfer calibration service	secondary transfer calibration team	secondary transfer standard	secondary transformation
secondary transformer	secondary transformer winding	secondary transition	secondary transition point	secondary transmission parameter
Secondary Trauma	secondary treatment	secondary treatment of sewage	secondary triad	secondary triangulation station
secondary trickling filter	Secondary trochoblast	secondary troostite	secondary trophoblast	secondary tubercle
Secondary tuberculosis	secondary tubular	Secondary tumor; Daughter tumor	secondary tuyere	secondary twinning
secondary twinning (deformation twinning)	secondary type colony	secondary type glider	secondary ultrasonic	secondary undulation
secondary unit	secondary upper jaw	secondary uranium	secondary uranium ore	secondary urinary duct
secondary use	secondary user	secondary valence	secondary vascular tissue	secondary vector