单词	goniometer
释义	Goniometer An instrument for measuring angles between surfaces. Like a protractor, but with movable arms. See: Protractor
随便看	sector sector graph security segment segment (circle) semi- semi-major axis semi-minor axis semiannually semicircle semiprime senary sentence septagon septenary sequence series set sexagesimal shape sharing si units side side view sign

数学辞典收录了1200条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。