一种棘齿装置把线从线轴转到梭心上。A ratchet mechanism transfers the thread from spool to bobbin.在打下物质繁荣的基础后, 梭伦便着手制定宪法.Having laid the foundations of material prosperity, Solon turned to the constitution.梭罗认为人是自然不可分割的一部分。Thoreau viewed m...
最后讨论了时谐性和电容率对电位分布的影响.The effects about potential distribution by time - harmonic character and permittivity a.用铽改性SBN晶体能有效地改善晶体的性质.实验测量了铽改性Sr0.61Ba0.39Nb2O6晶体的电容率和热电系数.The dielectric permittivity and pyroelectric coeffic...