所有科技知识-科学时代

科学时代收录了1160609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。

principal oscillation patterns analysis	principal oscillation patterns analysis（POPS）	principal outstanding	principal parallel	principal part
principal partition	principal part of a differential operator	principal part of an infinitesimal	principal parts	principal plane
principal plane	principal plane	principal plane	principal plane	principal planet
principal planet	principal point	principal point	principal point	principal point
principal point	principal point	principal point error	principal point of photograph	principal point of photograph
principal polarization plane	principal position	principal quantum number	principal quantum number	principal rafter
principal ray	principal ray	principal reaction	principal refractive index	principal refractive index
principal residence	principal role	principal room	principal root	principal scale
principal series	principal series	principal set	principal shareholder	principalship
principal shock	principal species	principal strain	principal strain	principal strain
principal strain	principal stress	principal stress	principal stress	principal stress
principal stress	principal stress	principal stress axis	principal stress method	principal stress space
principal sum	principal sum	principal surface	principal tapping	principal teacher
principal tenant	principal to principal transaction	principal-to-principal transaction	principal-to-principal transaction	principal-to-principal transaction
principal trade partner	principal value	principal value	principal value	principal vanishing point
principal vector	principal vector	principal vector	principal velocity	principal velocity
principal vertical circle	principal vertical plane	principal view	principal wave	principal wave
principal wave length	principal wife	principle	principle	principle
principle	principle amd material force	principle and righteousness	principle and trend	principle connection diagram
principled coordination	principle mark	principle of 7S	principle of absorption	principle of acquaintance
principle of associative shifting	principle of attenuation of correlation (PAC)	principle of autonomy of will	principle of belonging	principle of bivalence
principle of canonical sequence	principle of cataloguing	principle of causality	principle of change of circumstances	principle of classification
principle of classification management	principle of collection development	principle of comparative advantage	principle of comparative cost	principle of compatibility
principle of compensation	principle of complementarity	principle of comprehension	principle of compulsion	principle of confidentiality
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