For the low guality and high cost of wear structural parts,especially gear wheel,the new technology of variable temperature and low pressure carborization is indicated.
针对耐磨构件 ,尤其是齿轮等机械构件质量低和生产成本高的现状 ,提出变温低压渗碳新工艺。
The property and the constitution of phase of nitrided layer of 25Cr2MoV steel which is nitrided by ordinary ion nitriding and new process of vapid and deep-case ion nitriding in variable temperature respectively have been studied with microhardeness apparatus and X-ray diffratometer.
采用显微硬度计和ｘ射线衍射仪等手段，研究了２５Ｃｒ２ＭｏＶ钢经普通离子氮化和变温快速深层离子氮化新工艺处理后，其氮化层的性能及相组成，结果表明：在相同氮化时间内，变温快速深层离子氮化新工艺能显著地增加材料的有效氮化层深和总氮化层深，提高材料的表面硬度。
Research on the experiment of the technology to dry wheat in thin-layer with varied temperature;
小麦薄层变温干燥工艺试验研究
Equivalent age method for simulating MgO concrete expansionunder varied temperature condition;
氧化镁微膨胀混凝土在变温条件下膨胀规律数值模拟的当量龄期法
FTIR investigations of OH defects in clinopyroxenes at varying temperatures and their incorporation mechanisms;
单斜辉石中缺陷OH结合机理的变温红外光谱实验研究
A preliminary FTIR study of structural hydroxyl in pyroxenes at varying temperatures;
辉石中结构羟基变温行为的红外光谱初步研究
With the improvement of environmental protection awareness and the seriousness of poison, the fresh keeping techniques of longan fruit by temperature fluctuation are getting more and more concerned.
通过人为的变温处理可以保持龙眼采后的果实品质,延长贮藏寿命。
could be broken bytemperature fluctuation (4–35℃), 0.
研究麦田常见的3种杂草破眠的结果表明,4~35℃的变温处理、0。
Shear fatigue deformation of asphalt mixture with changing temperature was studied.
研究了变温下沥青混合料的剪切疲劳变形,结果表明,沥青混合料不只在升温阶段产生剪切疲劳变形增量,在降温阶段也会产生剪切疲劳变形增量;随温度的变化,沥青混合料剪切疲劳变形呈跳跃性增长,这与实际路面车辙增长趋势相似。