Steel is tempered by heating it and cooling it suddenly and then heating it again till it has the proper degree of hardness .

炼钢须交互运用骤冷骤热之方法以炼到适合的硬度。

属类：综合句库--

(10~100IRHD)Rubber,Vulcanized or thermoplastic--Determination of hardness (hardness between 10 IRHD and 100IRHD)

硫化橡胶或热塑性橡胶硬度的测定

属类：行业标准名称-国家标准名-GB/T6031-1998

Vulcanized rubber--Test method for the determination of Jones and Schopper hardness

硫化橡胶赵氏及邵坡尔硬度试验方法

属类：行业标准名称-国家标准名-GB/T6033-1985

Test methods for bare wires--Hardness test--Brinell hardness test

裸电线试验方法硬度试验布氏法

属类：行业标准名称-国家标准名-GB/T4909.8-1985

Rockwell hardness test. Tile Rockwell machine forces a specially shaped indenter, termed a "brale", into the material, and automatically records the depth of the impression.

洛氏硬度测试:洛氏硬度计将一个特定形状的压头，名叫“布雷尔圆锥形金刚石压头”，压入材料，自动记录压痕的深度。

属类：行业术语-检验检疫-

Test method of Rockwell hardness for friction materials

摩擦材料洛氏硬度试验方法

属类：机械模具-机械模具-机械术语

The exceptional hardness and inertness of certain boron compounds, including boron carbide, aluminum boride, and boron nitride (which has an electronic structure resembling that of diamond), make them useful as abrasives and reinforcing agents, particularly for high-temperature applications.

某些硼化物是所有已知物质中最硬、最耐热的物质，如碳化硼、硼化铝、氮化硼(电子结构类似金刚石)，因而用作磨料和加强剂，特别是应用在耐高温方面。

属类：化学及生命科学-化学-

Certain elements can improve the properties of steer and are therefore added to it. For example, chromium may be included to resist corrosion and tungsten to increase hardness .

某些元素加进钢里能够改善钢的性能。例如:加铬后能耐腐蚀;加钨后可增加硬度。

属类：产品说明书-机械产品说明-

The dictator was a man of great hardness of heart.

那个独裁者是一个铁石心肠的人。

属类：综合句库--

The colorful folk dances and in particular the pas de deux of the princess and Tibetan king shows both softness and hardness of the couple in characters

其中公主与藏王的两段双人舞刚柔相济，和谐悠雅;更有色彩斑烂的民族舞蹈相陪衬

属类：社会文化-舞蹈-文成公主

Strength in cutting-tool material is not always proportional to hardness .

切削刀具材料的强度并不都是与硬度成正比的。

属类：产品说明书-机械产品说明-

The most important properties of cutting tools are hardness at high temperature, wear resistance, and impact strength.

切削刀具最重要的性能是在高温下能保持的硬度、耐磨损和冲击韧性。

属类：产品说明书-机械产品说明-

The diameter is then compared with a table, from which the hardness is read off: the smaller the impression, the higher the number. This test is suitable for materials with a low or medium hardness.

然后将其直径与一个表格相比较，据此读出硬度数值:压痕愈小，硬度数值愈高。这种测试适用于低中等硬度的材料。

属类：行业术语-检验检疫-

The hardness number is then read on a dial on the machine. The Rockwell test is very quick, and is suitable for mass inspection of parts.

然后在硬度计的刻度盘上读出硬度数值。洛氏硬度计测试非常快捷，并且适用于部件的成批检验。

属类：行业术语-检验检疫-

No hardness could stop him from pursuing his goals.

任何困难也阻挡不住他去追求他的目标。

属类：综合句库--

Have the quality of both pliability and hardness

韧硬兼顾;刚柔相济

属类：综合句库--

Japanese swords are renowned for their hardness and extreme sharpness; they were the weapons of the samurai.

日本人的军刀因其坚硬和极端锋利而闻名，是日本武士的武器。

属类：工程技术-军事科技-

A cutting tool is wear-resistant if it resists abrasion at the cutting edge and along the tool face. Wear resistance improves as cutting tool hardness increases.

如果切削刀具的刃口和刀面耐磨,刀具就不易磨损。切削刀具的硬度越高,耐磨性就越好。

属类：产品说明书-机械产品说明-

Moderate hardness for smooth and clear writing

软硬适中,书写流利清晰

属类：产品说明书-产品说明-铅笔

Everything from homogeneous pure chemicals to the most heterogeneous of minerals, overing the whole spectrum of the Mol hardness scale, except maybe diamond.

什么都可以，从纯的均匀化学物质到大多数非均匀的矿物，范围覆盖整个莫氏硬度，也许只有钻石除外。

属类：化学及生命科学-化工-化工原理与技术

Resembling marble,as in smoothness,whiteness,or hardness .

似大理石的在光滑、洁白或坚硬等方面似大理石的

属类：综合句库--

Having the hardness or luster of a diamond.

似金刚石的具有金刚石的硬度或光泽的

属类：综合句库--

Despite the hardness of his bed, he is soon sleeping soundly.

虽然床很硬,他还是很快地睡熟了。

属类：综合句库--

Although metals differ widely in qualities such as strength and hardness , they all have certain qualities in common

虽然各种金属在诸如强度和硬度等特质方面差异很大，但是它们都具有某些共性。

属类：综合句库--

Although metals differ widely in qualities such as strength and hardness , they all have certain qualities in common.

虽然金属的某些特性诸如强度和硬度等有很大差别，但是它们都具有某些共同特性。

属类：综合句库--

He had slipped from hardness into affability

他从声色俱厉变得和颜悦色。

属类：综合句库--

Plastics--Determination of hardness by the ball indentation method--Rockwell hardness

塑料洛氏硬度试验方法

属类：行业标准名称-国家标准名-GB/T9342-1988