这辆车回火了。
她又去把那些鸡放回火里，给它们涂上黄油，愉快地转动着铁叉。
She went and put the fowls down again to the fire, basted them, and drove the spit merrily round.
日本铸剑师们开始采用更细更简单的回火纹。
Japanese swordsmiths started to adopt thinner and simpler temper lines.
他们管这叫硫化或电镀或者是回火之类。
三个过程：它们是淬火、回火和退火。
三种。它们是淬火、回火和退火。
三种。它们是淬火、回火和退火。
钢是通过先加热后冷却来回火的。
空冷后高温回火产生回火脆性。
However, a temper brittleness has appeared after high temper.
热处理过程包括：退火、淬火与回火。
The heat treatment process comprises annealing, hardening and tempering.
回火组织中出现少量贝氏体。
它由防锈的回火钢制成，具有缎光表面。
It is made of rustproof tempering steel with a satin-finish surface.
钢是通过加热再放进冷水里回火炼成的。
Steel is tempered by heating it and then putting it into cold water.
旧卡车突然出现回火，声音像放爆竹一般。
EXAMPLE: The old truck made a sudden backfire which sounded like a firecracker.
印尼村民返回火山斜坡。
回火造成磨损抗力降低。
Tempering treatment caused decreasing of abrasion resistance.
也被称为回火时效。
两种采用中断淬火的特殊工艺也是回火的形式。
Two special processes using interrupted quenching are a form of tempering.
在回火过程中，不但要考虑温度而且要考虑时间。
In the process of tempering, some consideration should be given to time as well as to temperature.
建立了回火硬度与回火温度关系的回火效应模型。
The tempering behavior model of relationship between tempering hardness and temperature was set up.
经过回火之后，钢的强度增大，因为其晶粒变细了。
After having been tempered, the steel becomes stronger because its grains get finer.
MIM钢试样的疲劳强度随着回火温度升高而减低。
Fatigue strength of the MIM specimens declined with increasing tempering temperature.
经过对材料的分析试验，发现其具有高温回火脆性。
By analytical testing the material discovered that it has high temperature temper embrittlement.
钢的热处理工序包括硬化、回火、退火和表面硬化。
The procedures of heat treatment of steel include hardening tempering annealing and case hardening.
钢的热处理操作主要有三种，即：淬火、回火和退火。
There are three main operations in the heat treatment of steel: hardening tempering and annealing.
钢的热处理操作主要有三种，即：淬火，回火和退火。
There are three main operations in the heat treatment of steel: hardening, tempering and annealing.
回火作业可以描述为渗碳体析出和凝聚或聚结的过程。
The tempering operation may be described as one of precipitation and agglomeration or coalescence of cementite.
结果表明：回火对试验钢的硬度和强度均有较大影响。
Results show that tempering has considerable influence on both hardness and strength.
结果表明：回火对试验钢的硬度和强度均有较大影响。
Results show that tempering has considerable influence on both hardness and strength.
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