1 摆锤冲击刀刃 pendulum striking edge2 摆锤冲击速度 impact velocity of the pendulum3 摆锤空击 free swing of pendulum4 摆锤力矩 moment of pendulum5 摆锤式冲击试验机 pendulum impact testing machine6 摆动周期 swing period7 摆杆 rod of pe
Unit 3 Sea Explorationform the foundation of构成……的基础early civilisations早期文明tale n．故事；叙述web是什么意思arch for寻找merchants and explorers商人和探险家t sail 起航；开航find one's way找到路become known as作为……而出名extend vt.扩展
1 摆锤冲击刀刃 pendulum striking edge2 摆锤冲击速度 impact velocity of the pendulum3 摆锤空击 free swing of pendulum4 摆锤力矩 moment of pendulum5 摆锤式冲击试验机 pendulum impact testing machine6 摆动周期 swing period7 摆杆 rod of pe
Unit 3 Fascinating Parks重点单词1 典型例句 (1)n. 自助餐；(火车)饮食柜台；(车站)快餐部 Dinner will be a cold buffet, not a sitdown meal.主餐是自助冷食，不是坐着等服务员送来的那种。(2)v.连续猛击；打来打去Their plane had been verely buffeted by storms.对不起
Unit 3 Sea Explorationform the foundation of构成……的基础early civilisations早期文明tale n．故事；叙述arch for寻找merchants and explorers商人和探险家t sail 起航；开航find one's way找到路become known as作为……而出名extend vt.扩展；使伸长；延长c
