查询词典 hardness

We have nearly 200 sets of the new production equipment: Walk the knife-type automatic lathes, Swiss Type Automatic Lathe, CNC automatic lathe, automatic Centerless grinder, screw Heading machine, tapping machines and advanced tester,for example, Projectors, Vickers hardness tester, torque machines, salt spray test machine, XRF detectors of harmful substances etc in order to ensure the quality and delivery time.

拥有新型的生产设备：走刀式自动车床、走心式自动车床、全自动数控车床、自动无心磨床、螺钉打头机、搓牙机等近200台和先进的检测仪器：投影仪、维氏硬度计、扭力机、盐雾测试机、 XRF 有害物质检测仪等。能确保公司产品的品质和交期。

The results show that laser-arc welding can achieve full penetration by single-path butt jointing through appropriate parameters; Y shape groove with 8 mm truncated edge can enhance the penetration ability of laser-arc hybrid welding. Low welding speed is good for penetration, however the limitation still exists for hick plates joint. Gap is significant factor of penetration when work pieces is large thickness. The hardness of thick plates joint shows that there is big difference in mold of vertical thermal cycle using laser-arc hybrid welding.

结果表明：通过激光功率等焊接规范匹配，激光-电弧复合焊接能实现20 mm厚板的全熔透单道对接；钝边为8 mm的Y形坡口有助于提高厚板激光-电弧复合焊缝熔透能力；降低焊接速度有利于提高熔深能力；工件厚度较大时，装配间隙对焊缝熔深能力的影响较为显著；接头硬度表明厚板激光复合焊焊缝纵向热循环模式存在较大差异。

Company Business: all kinds of mold, tools, mechanical parts of the vacuum, quenching, deep cold, nitrogen, carburizing, quenching and tempering, annealing, burning black, high-frequency and other conventional heat treatment, cymbals aging copper, stainless steel type of Bright Quenching and tempering, hardness testing, materials analysis.

公司经营范围：各种模具、刀具、机械零件的真空、淬火、深冷、氮化、渗碳、调质、退火、煲黑、高频和其它常规热处理等，钹铜时效、不锈钢类的光亮淬火和回火、硬度测试、材质分析。

cast hot-work die steel ; heat treatment process ; impact toughness and hardness

本文中采用 RE- Nb作为变质剂，对该钢种进行处理，并采用不同的高

The effects of heat treatment process on impat toughness and hardness of the cast 3Cr2MoWVNi hot-work die steel was studied.

众所周知，铸造模具因存在成分偏析和铸造缺陷使其力学性能远低于锻造模具。

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。

Compared with original cast 3Cr2MoNiWV hot-work die steel, the impact toughness and UTS at both room and high temperature of modified one can be increased by 1.9 times, 234 MPa and 179 MPa respectively, with same hardness.

与常规的铸造3Cr2MoNiWV热锻模具钢相比，冲击韧性提高1.9倍，达到了72.3J／cm^2，常温抗拉强度和高温抗拉强度（600℃）分别提高了212MPa和206MPa，达到1446MPa和104

The ship was no sooner gotten out of the Humber, but the wind began to blow, and the winds' to rise in a most frightful manner; and as I had never been at sea before, I was most inexpressibly sick in body, and terrified in my mind: I began now seriously to reflect upon what I had done, and how justly I was overtaken by the judgment of Heaven for my wicked leaving my father's house, and abandoning my duty; all the good counsel of my parents, my father's tears and my mother's entreaties came now fresh into my mind, and my conscience, which was not yet come to the pitch of hardness to which it has been since, reproached me with the contempt of advice, and the breach of my duty to God and my father.

我们的船刚驶出亨伯河就刮起了风，风越刮越大，大得吓人；因为我从未出过海，晕船的痛苦难以形容，心理上又非常害怕。这时，我开始认真反省自己的行为。老天就这么公正地惩罚我这个背弃父母、放弃责任的逆子啊！这时，我父母的忠告，父亲的眼泪和自己的诺言，一一浮现在脑海。我的良心当时尚未像后来和现在这样顽固和死硬，我自然要对自己忽视忠告、对上帝和父亲不尽天职的行为加以谴责。

Ickers Low Load Hardness Tester Model VC-5A1 is a new hi-tech product integrating precision mechanical and photoelectrical technologies.

C-5D1维氏硬度计采用精密机械技术和光电技术，使测量装置与工作压头自动切换，减少人为震动

It is shown that the Nix-Gao relation between the microindentation hardness and indentation depth holds for all the six indenter angles. The effect of friction is negligible for relatively flat indenters (e.g., Berkovich indenter), but may be significant for sharp indenters (e.g., cubic indenter).

结果表明：对于包含尺度效应的微压痕问题，压头角度的减小可以显著提高微压痕硬度，Nix-Gao模型能够很好地描述压头角度变化对微压痕硬度的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。