| 释义 |
Tocumen, R.
- documentn. 文件，公文；文档；证件 vt. 用文件证明
- Montgomeryn. 蒙哥马利(姓氏)
- integumentn. (动植物天然的)覆盖物;珠被;外皮; 外壳
- 读、写、算dú _ xiě _ suàn
the three R's
- 阴极射线管yīn jí shè xiàn guǎn
cathode-ray tube (CRT); cathode-ray lamp; C-R tube
- 絮凝反应xù níng fǎn yīng
flocculoreaction; F. R.
- 每分钟转数měi fèn zhōng zhuǎn shù
revolutions per minute (r/m)
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