释义 |
Salgado, R.
- Salvadorn. 萨尔瓦多(巴西东部港市)
- Selectricn. 电动打字机
- obligatoryadj. 必须的, 必要的;要求的, 应尽的
- 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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