An instrument that calculates the size of sediment particles by measuring the attenuation of a finely collimated X-ray beam through a settling suspension as a function of height above the base of the sedimentation tube and time.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。