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- excite heat by friction 由摩擦而生热
- The meteor, rushing through the air, becomes intensely heated by friction and is usually completely vaporized. 流星快速掠过空气时，由于磨擦而变得非常热，通常被完全气化了。
- The meteor,rushing through the air,becomes intensely heated by friction and is usually completely vaporized. 流星快速掠过空气时，由于磨擦而变得非常热，通常被完全气化了。
- The meteor , rushing through the air, becomes intensely heated by friction and is usually completely vaporized. 流星快速掠过空气时，由于磨擦而变得非常热，通常被完全气化了。
- Why heat can be produced by friction is clear now . 摩擦能产生热的原因现在清楚了。
- Why heat can be produced by friction isnow clear. 现在清楚了为什么摩擦能产生热。
- the generation of heat by friction 摩擦生热
- Why heat can be produced by friction is clear now. 为什么摩擦能产生热现在清楚了。
- Why heat can is produce by friction is clear now. 为什么摩擦能生热现在已清楚了。
- Matches are lighted by friction. 火柴由摩擦而生火。
- The house is shaded from the midday heat by those tall trees. 高高的树木使这所房子避开了正午的炎热。
- Why heat could be produced by friction is clear now. 为什么摩擦能生热现在已清楚了。
- To wear down or rub away by friction; erode. 磨蚀，磨损因摩擦而破损或擦伤；侵蚀
- The heat by now had banked itself in the tent. 帐蓬里的热气愈积愈厚。
- It did not furnish an explantation for the heat generated by friction. 它未能圆满地解释因摩擦而产生的热。
- Man can make heat by burning wood,coal and gas. 人可以用燃烧柴，煤，煤气的办法产生热量。
- To wear down or rub away by friction;erode. 磨蚀，磨损因摩擦而破损或擦伤；侵蚀
- A rubbing away or wearing down by friction. 摩擦,磨损,消磨:通过磨擦作用擦掉或消耗掉。
- Man can make heat by burning wood , coal and gas. 人可以用燃烧柴，煤，煤气的办法产生热量。
- Warmth, wear, or soreness produced by friction. 摩擦所产生的热、擦损或擦痛
