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...
The scale of reduction of a microform.缩微印刷品的缩小比例.A device for reading materials in microform, such as microfilm and microfiche.显微阅读器用以阅读缩微成像, 如缩微胶卷和缩微平片上的材料的仪器.Audio - visual materials and microform materials are not inc...