Everyone knows that a sharp knife cuts better than a dull one,but do you know why, exactly?
The force on the handle and the edge are the same, but the areas in which the force is concentrated are quite different.
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Everyone knows that a sharp knife cuts better than a dull one,but do you know why, exactly?
The force on the handle and the edge are the same, but the areas in which the force is concentrated are quite different.
重點單詞 | 查看全部解釋 | |||
concentrate | ['kɔnsntreit] |
想一想再看 v. 集中,專心,濃縮 |
聯想記憶 | |
exert | [ig'zə:t] |
想一想再看 vt. 運用,施加(壓力,影響等) |
聯想記憶 | |
spread | [spred] |
想一想再看 v. 伸展,展開,傳播,散布,鋪開,涂撒 |
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shaft | [ʃɑ:ft] |
想一想再看 n. 軸,桿狀物,矛,柄,豎井,(一道)光線 |
聯想記憶 | |
dull | [dʌl] |
想一想再看 adj. 呆滯的,遲鈍的,無趣的,鈍的,暗的 |
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concentrated | ['kɔnsentreitid] |
想一想再看 adj. 全神貫注的,濃縮的 動詞concentrate |
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sink | [siŋk] |
想一想再看 n. 接收端,溝渠,污水槽,散熱器 |
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principle | ['prinsəpl] |
想一想再看 n. 原則,原理,主義,信念 |
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pressure | ['preʃə] |
想一想再看 n. 壓力,壓強,壓迫 |
聯想記憶 | |
handle | ['hændl] |
想一想再看 n. 柄,把手 |
聯想記憶 |