回火

The present company yearly produces the resistance furnace, the trolley electric stove, the well type electric stove, the box-type electric stove, the annealing electric stove, the tempering electric stove, to quench the electric stove, the gas nitriding electric stove, the gas carburizing electric stove, industry electric stove nearly thousand and so on salt bath, nitre salt stove, the proprietary product trolley electric stove and the forvacuum protective atmosphere electric stove has exported Japan, the US, Indonesia, Singapore, Thailand and so on many countries.

目前公司年产电阻炉、台车电炉、井式电炉、箱式电炉、退火电炉、回火电炉、淬火电炉、气体氮化电炉、气体渗碳电炉，盐浴炉、硝盐炉等工业电炉近千台，其中专利产品台车电炉和预抽真空保护气氛电炉已出口日本、美国、印尼、新加坡、泰国等许多国家。

Toughness and susceptibility to hydrogen embrittlement of the steel could be improved as increasing tempering temperature below 370℃.

由此可以通过提高回火温度改善钢的韧性，降低钢的氢脆敏感性。

Tempered at 420℃, high hardness and toughness property can be maintained. It meets the requirement of multi-times impact strength with small energy and fatigue on operating duty. It has the higher endurance life property and so on..

经420℃回火，保持较高的强度和韧性，满足汽车板簧小能量多冲和疲劳载荷的服役状态，具有较高的疲劳寿命等使用性能。

Iron is ferromagnetic at ordinary temperatures and is the only metal that can be tempered.

铁在常温下具有铁磁性，也是唯一可被回火的金属。

Increasing quenching temperature can improve the impact toughness and wear property, and the optimal impact toughness (40 J/cm^2) and wear performance of the tested steel can be obtaind by quenching at 1100℃ and tempering at 250℃ SEM analysis finds that the main wear mechanism is cutting wear and fillister under the low stress grinding abrasion.

提高淬火温度有利于冲击韧度和耐磨性的提高，经1100℃淬火＋250℃回火热处理，材料可获得最佳的冲击韧度(40J/平方公分)及耐磨性。用SEM分析发现，在该低应力磨料磨损工况下，实验钢的磨损形式主要有显微切削和凿坑。

In order to analyze and investigate the effect of heat treatment on delayed fracture resistance of 30MnSi PC steel bar s FIP test was adopted.

对30MnSi PC钢棒进行了淬火回火处理，分析探讨了热处理工艺对高强度钢耐延迟断裂性能的影响。

It is proved in practice that the burner have high burning stability, low backfire rate and low flameout rate .

其燃烧稳定，具有极低的回火率以及离焰率，已成功应用于多个炼油化工装置

The working mechanism of Wollaston prism differential interference contrast method is introduced, and by this method, the processes of ignition, backfire, flameout are observed. The effects of the stabilizing rod on v-flames are also researched.

介绍了Wollaston棱镜差分干涉仪的工作原理，用差分干涉法研究了预混V形火焰的的点火、熄火和回火过程的特性以及稳定杆对V形火焰的影响。

Its main forms in the combustion process is caused due to high temperature flamer tempered, once this happened is not achieve ideal result, welding is easy to make flame back to burn the dangers.

其主要形式是在燃烧过程中由于火焰枪温度过高造成回火，一旦发生这种情况既不能达到焊接理想效果，也容易使火焰回燃造成危险。

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。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷