查询词典 even-tempered

How to improve the impact toughness of quenched and tempered steel forgings is an important thesis with operation significance.

提高调质钢锻件的冲击韧性是一个极具现实意义的课题。

The game retort is the last refuge of the ill-tempered, struggling athlete.

如果说爱国主义是坏蛋最后的归宿的话(译注：Samuel Johnson)，那「你没上场过」就是

But I have always observed that they who are good-natured when children are good-natured when they grow up; and he was always the sweetest-tempered, most generous-hearted, boy in the world.

我常说，小时候脾气好，长大了脾气也会好；他从小就是个脾气最乖、肚量最大的孩子。

But I have always observed that they who are good-natured when children are good-natured when they grow up; and he was always the sweetest-tempered, most generous-hearted, boy in the world.

人。我常说，小时候脾气好，长大了脾气也会

The results show that BS 460MPa grade reinforced bar can be produced all from Q235 or 20MnSi billet by the remained heat treatment process but the production cost of the former is lower. When the water pressure minishes, the intensities of reinforced bar reduce; the higher the temperature at the entrance of cooling bed is, the lower the intensities are. Therefore, the commendatory process parameters are that five stages coolers should be opened, water pressure should be all 1.8～2.0MPa and the temperature at the entrance of cooling bed of Q235 reinforced bar should lower than 650℃. The typical microstructure(Q235): the surface layer is tempered sorbite; the transition layer is pearlite and ferrite, and the partial ferrite is acicular; the core is pearlite and ferrite and the grain fineness is 8～10 grade. The yield strength is reduced by 10～20MPa after natural ageing and it can be simulated by artificial ageing(100℃×2h or 200℃×1h).

结果表明，Q235和20MnSi钢都可以利用余热处理工艺生产出性能合格的钢筋，但前者的生产成本较低；水压减小，钢筋强度降低，上冷床温度越高，强度越低，推荐5段水冷器全开，水压均为1.8～2.0MPa，Q235钢筋的上冷床温度应控制在650℃以下；钢筋典型的金相组织（Q235）表层为回火索氏体，过渡层为珠光体+铁素体且部分铁素体呈针状，心部为珠光体+铁素体，晶粒度8～10级；自然时效后屈服强度下降10～20MPa，用人工时效可以模拟自然时效，工艺是100℃×2h或200℃×1h。

When tempered with heat and pressure, the potential

若是以热和压力加以锻炼，潜力就会发挥。

The study on improving tough hardness of 65Nb steel which is used for new type cold working mould has been made.The result shows that 65Nb steel can achieve high tough hardness when it is spheroidized after full forging in fore heat treatment and is high-tempered for three times after high heat quenching in final heat treatment.

对新型冷作模具用钢65Nb 进行了提高强韧性的工艺研究，结果表明：65Nb 钢预先热处理采用经充分锻造后球化退火，最终热处理采用高温加热淬火后三次高温回火可获得高的强韧性。

He was master of any horse, and he carried himself with a well-tempered air of mastery.

他深谙马匹，气定神闲，具有一种掌控一切的气质。

In this paper, the new IGF refined hot-forged and non-hardened-tempered steel with high strength and toughness was designed and its capability was studied.

研制了新型晶内析出铁素体细化微合金高强韧性非调质钢，并对其组织性能进行了系统的研究。

The result shows that the impact toughness and hardness of the cast hot-work die steel reaches the best value (72.3 J/cm 2;34.5 HRC) when the steel is quenched at 1050℃ and tempered at 650℃.

因此 ，如何提高铸造热锻模具的力学性能，使其满足服役条件的要求，就成为关键。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。