查询词典 hardness

When water is less than the total hardness, they always basicity, called negative hardness.

当水的总硬度小于总碱度时，它们之差，称为负硬度。

The results show that these semi-high speed steels can be hardened remarkably by secondary hardening to meet the hardness requirements of cold rolling. The secondary hardness of the tested steels is increased with the contents of alloying elements such as Mo, V, Si and changed with quenching temperature to show two peaks.

研究结果表明，新型半高速钢有显著的二次硬化效应，能满足冷轧工作辊的硬度要求；随Mo、V和Si等合金元素含量升高钢的二次硬度升高，随淬火温度升高钢的二次硬度出现两次峰值。

Fluoride can increase the hardness of the teeth; that calcium fluoride in the enamel of the higher proportion of teeth, the greater the hardness.

答：（1）氟可以增加牙齿的硬度，这在牙齿珐琅质的比例较高氟化钙，硬度越大。

The results showed that with increasing of FeS content,both the density and conductivity of composite were reduced,the hardness was increased and the microstructures were homogenized.When FeS content was less than 15% and more than 10%,the hardness of composite was conformably in this section.

FeS颗粒弥散强化Cu基复合材料是一类具有优异性能的新型功能材料，它具有高强度、高耐磨性、抗高温软化能力优良等综合物理性能和力学性能，同时兼顾了Cu的传导性，这与FeS的性能特征紧密相关。

It is proved in production practice that the actual conversion values between rockwell and vickers hardness of quenched tempered high speed tool steel dont correspond with the values in GB/T1172-1974 《Conversion Tables on Hardness and Strength of Ferrous Metals》.

引言多年来，一些高速钢工具专业生产厂和自用生产厂在测量淬硬高速钢的洛氏硬度 HRC和维氏硬度 HV时觉察到两种实测硬度之间的换算值与国家标准 GB/T1 1 72 - 1 974《黑色金属硬度及强度换算表》中的换算值不相符合。

According to the variations in friction coefficient, wear rate, temperature of tribo-pair and tribo-surface micro hardness with time, the tribological process lubricated by oil containing Mg_6Si_4O_(10)_8 shows quasi-periodicity with characteristic of damped oscillation, and quasi-period is 200 h; micro-hardness of the worn surface is one time higher than that of 45~# steel substrate.

在实验室条件下，验证了主要组分为Mg6Si4O108的金属磨损自修复剂在45#钢摩擦副表面形成修复保护层的能力，得到了厚3～6 μm的反应层；采用Falex型摩擦磨损试验机进行了长达400 h的摩擦磨损试验，研究了在Mg6Si4O108润滑下45#钢摩擦副的摩擦磨损性能、摩擦副摩擦表面显微硬度和温度随时间变化的情况。

The macroscopic hardness, microscopic hardness, tensile capability and press capability of fine grain samples were tested. In addition, the ultra fine grain material''s thermo-stability, mechanical capability and dilatability were studied.

分析了所得到的细晶材料的外观形貌、金相组织和透射电镜形态，测量了细晶材料的微观和宏观硬度、拉伸性能、压缩性能，并研究了超细晶材料的热稳定性、力学性能和热膨胀性能。

The dispersoid distribution of the second phase could strengthen the surface of the alloy, which decreased the quantity of abrasive particles. The wear volume of the alloy was decreased. The hardness and strength of the alloy were increased after ECAE. The resistance of deformation was improved and the depth and width of furrows were decreased due to the increase of hardness and strength. As a result, the wear-resistance and tribological properties of the alloy were improved after ECAE.

ECAE热挤压处理显著细化了铝青铜合金的微观组织，弥散分布的第二相对合金起到强化作用，减少了剥落磨粒的数量，降低了合金的磨损量；ECAE热挤压处理的铝青铜合金组织细小，强度和硬度高，提高了合金抵抗塑性变形能力，减轻了磨粒对合金表面的犁削作用，提高了合金的摩擦磨损性能。

By using dipping enameling on a low carbon steel,effects of firing temperatures and time on structure and properties were studied,the hardness of the enamel coating was measured,and the relationship between hardness and firing temperature and time and the effect of crystal nucleus addition were also investigated.

采用浸搪法制备搪瓷基板，研究了不同烧结温度和时间对钢铁基板搪瓷制备工艺、组织和性能的影响，测定了搪瓷层的硬度，并分析了搪瓷层硬度与烧结温度和时间的关系，以及晶核添加剂对搪瓷层硬度的影响。

Hardness adjustable, and can be in the Shaw A 45-100 be adjusted between the super soft shot stick series hardness as low as about Shore A 25; the same time, the transparency according to the special requirements of users to provide fire stick PS , PP, PE, PC, PC / ABS, ABS and other materials transparent TPR / TPE, great use of materials to meet individual user requirements.

硬度可调整，一般可在邵氏A（Shore A45-100之间任意调节，超软射粘系列硬度可低至Shore A 25左右；同时，可根据用户对透明度的特殊要求提供射粘PS，PP，PE，PC，PC/ABS，ABS等材料的透明TPR/TPE，极大限度地满足用户对材料的个性化要求。

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％。