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单词
珍珠
释义
珍珠
Encyclopedia
医学
息风止痉药
释
pearl
珍珠
息风止痉药。又称真珠、蚌珠、珠子等。始载于《雷公炮炙论》。珍珠贝科动物马氏珍珠贝(Pteria martensii)、蚌科动物三角帆蚌(Hyriopsis cumingii)或褶纹冠蚌(Cristaria plicata)等双壳类动物受刺激形成的有光泽的圆形固体颗粒。
农学
珍珠
释
pearl
珍珠
贝类软体组织产生的具有一定光泽的球状矿物。又称真朱、真珠、蚌珠、珠子、濂珠。
Physics
pearl
珍珠,珠状物
随便看
center of inflection
center of interest
center of inversion
center of involution
Center of land
center of light
center of magnitude
center of mass
center of mass angle
center of mass coordinate system
center-of-mass coordinate system
center-of-mass energy
center of masses
center of mass frame
center-of-mass frame
center of moment
center-of-momentum frame
center of momentum system
Center of National Railway Intelligent Transportation System Engineering and Technology
center of oscillation
center of percussion
center of perspectivity
center of polarity
center of principal curvature
center of projection
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