难检字字典在线查询

汉语拼音：huí huǒ

1.金属热处理工艺之一。将淬（cuì）火后的金属工件在适当温度下加热、保温，然后冷却。用以提高延性或韧性。

2.指气焊等过程中，氧炔吹管等的火焰向反方向燃烧。这种现象常会引起事故。

• The car backfired.

  车回火了。

• He was going to call on a local landowner.

  小货车在红色泥土路上行驶,不停地回火,发出突突声.

• He waited until the volcano became quiet and he was able to return two days later.

  他一直等到火山平息下来,两天后他才得以重回火山上.

• If the engine backfires , the sudden pressure in the intake manifold forces the valve back.

  如果发动机回火, 进气歧管骤增的压力就迫使阀门向后移动.

• Workers tempered steel at various temperatures to increase its strength.

  工人们用各种温度使钢回火来增大其强度.

• It'should be sharp and not tempered so it will break.

  应该把它磨得很锋利,不要回火锻造,免得它会断裂.

• The microstructure of the weld zone is tempered martensite zone.

  热影响区的显微组织主要为回火马氏体;熔合线结合良好,组织均匀.

• The interaction of flow speed and flame speed influences the flash back.

  而气流速度和火焰传播速度的相互关系对回火有很大的影响.

• At high temperature uses are: sintering, welding, hardening, sintering, tempering, Xu cold.

  在高温下使用用途有: 烧结 、 焊接 、 淬火 、 烧成 、 回火 、 徐冷.

• Keywords: ultra - low carbon bainitic steel, tempering, transmission electron microscopy.

  关键词: 超低碳变韧铁合金钢 、 回火 、 穿透式电子显微镜.

• Steel is tempered by heating and then cooling it.

  钢是通过先加热后冷却来回火的.

• The piece of steel tempered well.

  这块钢回火后韧度正合适.

• The engine has been firing back.

  发动机不断回火.

• Its tensile strength is above 2000 MPa.

  以回火状态使用,抗拉强度达2000MPa以上.

• My old car backfires all the time.

  我那辆旧车老是回火.