查询词典 hardness

Research on Keeping Quality of Different Flesh Types of Prunus persica L.Niu Liang, Wang Zhiqiang, Liu Shu'e, Song YinhuaAbstract: Effects of post-harvest cold storage and Modified Atmosphere Package on fruit hardness, weight losing and soluble solid content of different peach or nectarine varieties were investigated. The results showed that:(1) There were obviously differences of fruit hardness among varieties of different flesh types. In room temperature, FH of '24-30' and 'Zhongtao No.2' went down slower than 'Zhongyoutao No.5' and 'Zhongyoutao No.10'. In cold storage, '24-30', FH of Zongyoutao No.5' and 'Zhongyoutao No.10' descent quickly after 2 weeks of storage while that of 'Shuguang' and 'Zhongtao No.2' quickly descent just after storage.(2) MA package could effectively slow down the decreasing of FH. There were obvious differences among different varieties while 'Zhongyoutao No.10' was less sensitive than others.(3) Soluble solid content went down after harvest and the procedure was slower in lower temperature. In room, MA package seems accelerate the descendent of SSC.

采用不同肉质类型的桃、油桃果实为材料，对采后低温和自发气调包装等对果实硬度、失重和SSC含量等的变化进行了研究，结果表明：(1)不同类型桃、油桃采后果实硬度变化差异较大，常温下24-30和中桃2号果实硬度下降较慢，而中油桃5号、10号较快，在冷库低温条件下，24-30、中油桃5号和中油桃10号两周后硬度出现迅速下降，而曙光和中桃2号在贮藏后即迅速下降，带皮硬度与去皮硬度之间有一定差异，但变化趋势基本一致；(2)MA包装能有效地延缓采后桃、油桃果实硬度的降低，在常温及低温条件下均是如此，不同肉质类型间差异明显，曙光和中桃2号非常敏感，而中油桃10号则不太敏感，即MA包装对其果实硬度降低的延缓没有其它品种明显；(3)采后桃、油桃果实的SSC含量均有一定的降低，低温下该过程较慢，MA包装在常温下有加剧SSC下降的趋势，低温下则不明显，这可能与常温下采后立即进行MA包装不利于&田间热&及呼吸热的及时散发而加剧呼吸有关。

Hardness of malleable cast iron decreases with the increase of Si content after cooling and water quenching; while the hardness increases with the increase of Si content after furnace cooling and oil quenching.

在空冷和水淬后，可锻铸铁的硬度随硅含量的增加而降低；在炉冷和油淬后，可锻铸铁的硬度随硅含量的增加而升高。

Use: Used in the cutter, glass, pottery, gem, agate, mould, alloy of hardness, part of hardness alloy, instrument, instrument, measuring tool, skeleton and various nonmetal high hard fragile material products, nonmetal processing, suitable for the file and pare the hard material.

用途：用于刀具、玻璃、陶瓷、宝石、玛瑙、模具、硬度合金、硬合金材料的零件、仪器、仪表、量具、骨骼及各种非金属高硬脆材料制品，非金属的加工，适用于锉削坚硬的材料。

The crystalline defects of metallic substrate can promote the formation of multi-crystal thin films. In contrast, the films on the Si single crystal are basically amorphous; The hardness of films are mainly determined by N concentration. The highest hardnesses of Si〓N〓 and TiN films ware obtained at 1. 1 of N/Si and 0.96 of N/Ti respectively. The hardness of Si〓N〓 film decreased dramatically when the free silicon atoms present.

发现薄膜中N原子百分含量主要受氮离子束流和氮气分压的控制，随着氮离子束流和氮气分压的提高，N/Si和N/Ti原子比增加；膜的组织结构则主要受轰击离子束压和基体种类的影响，高的轰击束压可以抑制薄膜的择优取向，金属基体上的晶体缺陷使薄膜易于形成多晶，而单晶硅上的薄膜基本上为非晶态；薄膜的硬度受氮含量的影响最大。

Since high carbon alloy steels is HRC 55~65 in hardness and 1.5%~2.5% in Carbon Equivalent, high-carbon-alloy-steel surfaced metals generally were selected in order to maintain high hardness and wear resistance of weld repaired layer, of which high-carbon Cr-Mo-W surfaced metal had been most widely used with 300~500℃ preheat or heat-treat after welding to improve its crack resistance.

由于高碳合金钢的碳当量高达1.5％～2.5％，硬度一般为HRC55～65，为了保证修复层的高硬度和耐磨性，焊接材料常选用高碳合金钢质堆焊金属，目前最普遍采用为高碳Cr－Mo－W系堆焊金属，但必须采用350～500℃高温预热焊和焊后热处理工艺措施以保证其具有一定的抗裂性。

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。

Rockwell hardness testers, using a variety of indenters and loads with corresponding scales, are direct reading instruments(i.e., the hardness is read directly from a dial).

洛氏硬度试验机，使用一系列的压头施加相应比例的载荷，然后直接在量具上读取数值（比如，直接从刻度盘上读取硬度值）。

The made grinding ball has needle like bainte as main component, small amount of martensite and residual austenite, average surface hardness of HRC 56-58, average volume hardness of HRC 50-55, impact toughness of 16-20 J/sq cm and excellent comprehensive mechanical performance.

所制备的磨球组织主要为针状贝氏体及少量马氏体和残余奥氏体，磨球的表面平均硬度HRC56～58，平均体积硬度HRC50～55，冲击韧性α k 值在16～20J/cm 2 ，落球次数＞20000次，具有非常好的综合力学性能、耐磨性和冲击疲劳寿命。

The hardness variation of D2 steel under different quenching temperature and the influence of subzero treatment on hardness of D2 steel were studied,and its microstructure was analyzed as well.

研究了D2钢在不同温度淬火后的硬度变化，以及深冷处理对其硬度的影响，并对其显微组织进行了分析。

1 Filling amount: 30 tons of bamboo counted with liquor filled tank and circularly press the bamboo flakes for 3-4 minutes during boiling,(the data results from repeated experiments), if the filling amount is too less, the hardness is low, too much alkali remnant, and the pulp yield will be low; if the filling amount is too much, the cooking liquor can not be dried completed, and the circulation amount is too less, the electric current of circulating pump is too low, it will be difficult to cook, and there will be too much pulp knots with high hardness and less alkali remnant which may lead to unripe pulp.

3.1.1装锅量：竹子30吨是以液浸装锅和开中循环压竹片3——4分钟为计，（数据是根据多次实验得出的结果）如装锅量太小，硬度低，残碱大，浆得率低，装锅量太大蒸煮液无法完全送完，循环量小，循环泵电流小，蒸煮困难，浆节子多、硬度高、残碱小，有可能造成生浆。

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％。