回火的英文：
(n) backfire
tempering 回火（鋼鐵專業(yè)詞匯）

參考例句：
  • degree of hardness and elasticity of a tempered meta
    （金屬回火后的）硬度和彈性.
  • Backfire:an explosion of prematurely ignited fuel or of unburned exhaust gases in an internal-combustion engine.
    回火:過(guò)早點(diǎn)燃的燃料的爆炸或內(nèi)燃機(jī)中未燃的廢氣的爆炸。
  • fire-proof baffle
    回火擋板
  • hardened and tempered
    淬火與回火的
  • Steel is tempered by heating and then cooling it
    鋼是經(jīng)過(guò)加熱，然后冷卻來(lái)回火。
  • Two times temper has little effect on the hardness.
    二次回火后硬度變化不大。
  • three times temper will decrease the hardness.
    三次回火后，硬度反而降低。
  • "Three. They are hardening, temper and anneal. "
    三種。它們是淬火、回火和退火。
  • Degree of hardness and elasticity of a tempered metal
    (金屬回火后的)硬度和彈性.
backfire是什么意思：
v. 適得其反，事與愿違；放出逆火，發(fā)生回火
n. 逆火，回火
  • The car backfired.
    車回火了。
  • The engine backfired noisily.
    那發(fā)動(dòng)機(jī)發(fā)生逆火引起爆鳴。
  • To explode in the manner of or make the sound of a backfire.
    用逆火的方式爆裂或發(fā)出逆火的聲音。
  • The President's tactics could backfire.
    總統(tǒng)的策略可能會(huì)適得其反。
  • To start or use a backfire in extinguishing or controlling a forest fire.
    在熄滅或控制森林大火蔓延中燃起或使用逆火。
tempering是什么意思：
n. 性情；脾氣；心情；回火
v. 使緩和；調(diào)和；（使）回火
  • hardened and tempered
    淬火與回火的
  • I was in a flaming temper.
    我正怒氣沖天。
  • She is a girl of sweet temper.
    她是個(gè)性情溫柔的姑娘。
  • He curbed his temper.
    他穩(wěn)住了情緒。
  • Temperance is the best physic
    克制乃是最好的治療

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