“学习困难”的概念、定义、翻译、参考文献-科学参考

单词	学习困难
释义	学习困难 Encyclopedia 理学学习差异释 learning disabilities; LD学习困难学生的感官和智力正常，但在听、读、说、拼、写和计算等方面存在某种障碍，学习成绩明显低于同年级学生、远未达到教学目标的现象。
随便看	bra-ket notion braking absorption braking capture braking energy recovery system braking index braking lining braking of freight vehicle braking orbit braking radiation braking rope braking system of hydro-generator unit Bram bramble Bramer Bramham Park Bram Stoker brancart branch branch and bound branch-and-bound algorithm branch and bound method branch-and-bound method branch and root of meridian Branch Censorate branch chain

科学参考收录了854744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。