This paper introduces the way of preparing nanocystalline WC which average grain size is about 20-30nm and average particle size is less than 100nm with low temperature carbonization method,and the WC powder is tested by composition analysis,DSC,XRD,SEM and BET method.
本文主要讲述了用低温碳化的方法制备平均晶粒度为20~30nm,颗粒尺寸小于100 nm的纳米碳化钨粉末。
Nanocystalline WC powder was prepared by low temperature carbonization.
利用成分分析和XRD,SEM以及BET等检测手段,对低温碳化工艺制备纳米级WC粉末进行了研究,制备了平均晶粒度在20~30 nm,颗粒尺寸小于100 nm的纳米碳化钨粉末。
Effects of low temperature treatments on prolonging the longevity of cut flowers of Iris xiphium L. var. hybridum;
切花荷兰鸢尾(Iris xiphium L.var.hybridum)低温处理与保鲜
Effects of low temperature treatment on post-harvest strawberry fruit quality;
低温处理对草莓贮藏品质的影响
Effects of low temperature treatment before planting on Allium sativum L.sprouting rate and secondary growth;
播前低温处理对大蒜出苗率和二次生长的影响
Effects of pre-germination chilling on subsequent growth and flowering of the plants.;
低温处理种子对植物生长和开花习性影响的研究
Effects of chilling,protected culture and gibberellin combined with low temperature on flowering and new bulb reproduction of Asiatic hybrid lily were studied.
以亚州百合为试材,探讨了低温冷藏、设施栽培和赤霉素结合低温处理对亚洲百合开花及新球繁殖的效应。
Effects of Chilling and Plant Growth Regulators on Freesia Flowering;
结果表明，香雪兰种球在自然条件下于８月下旬开始部分解除休眠，在此后进行低温处理或低温加赤霉素处理，可使其在低温处理阶段完成花芽分化，分别提前６０天和７０天开花；在低温和赤霉素处理前４５天，以５０ｍｇ／ｋｇ乙烯利处理种球，可提前花期７５天。
Pakistan's coal,because of its high content of volatile matter and non-coking properties,is to be carbonized in a low temperature carbonization plant.
由于含有大量挥发物及具有非焦化性,巴基斯坦的煤需要在低温碳化装置中加以碳化。
Preparation of SiC Whiskers by Low-temperature Decomposition of Silicon Nitride
氮化硅低温转化合成碳化硅晶须研究
Study on High-temperature Carbonization and Low-temperature Chlorination on Modified Titanium Bearing Blast Furnace Slag
改性含钛高炉渣高温碳化低温氯化的研究
Recovery of Uranium from Bao Steel's Tailings by Carbochlorination Reaction.
低温碳热氯化法回收包钢尾矿中的铀
Low-Temperature Photoluminescence Studies of Characteristics of Irradiated 6H-SiC;
6H-碳化硅（SiC）辐照特性的低温光致发光研究
3.0-4.2μm low temperature cooled first overtone CO-laser
低温3.0～4.2μm波段第一泛频一氧化碳激光器
Brightening Treatment of Austenite Stainless Steel after Plasma Carburizing
奥氏体不锈钢低温离子渗碳后的亮化处理
Effect of reaction temperature on the catalytic pyrolysis of gasoline for the favored production of light olefins
反应温度对汽油催化裂解多产低碳烯烃的影响
Effects of Carbon Source Types on Denitrification Performance at Low Temperature
碳源类型对低温条件下生物反硝化的影响
Oxidation Behaviour and Mechanism of SiC-Glass Coated Carbon/Carbon Composites at Low-and Medium-Temperature
SiC-Glass涂层碳/碳复合材料的中低温氧化行为及机制研究
Study on the Influence of Low Temperature and Low Carbon to Simultaneous Nitrification and Denitrification;
低温、低碳源对同时硝化反硝化污水生物处理系统的影响研究
The Influence of Medium and Low Carbon Surface Nanocrystallization to Low Temperature Gas Nitriding;
中低碳钢表面纳米化对低温气体渗氮行为的影响
Research advance in non-thermal plasma induced selective catalytic reduction NO_x with low hydrocarbon compounds
低温等离子体诱导低碳烃选择性催化还原NO_x研究进展
Oxidative dehydrogenation of ethane with carbon dioxide to ethylene-the study of supported chromium oxide catalysts and the catalytic process at low temperature;
二氧化碳氧化乙烷—低温Cr系催化剂和反应过程的研究
A Study on Cryogenic Toughness of Super Low Carbon 9Ni Steel Welding Joint
超低碳9Ni钢焊接接头低温韧性研究
Solid carbon dioxide has a low temperature, which makes it suitable for refrigeration.
固体二氧化碳的温度很低，这使得它很适用于冷冻。
There is also a special carbon monoxide standard applicable to engine operation in low temperatures.
另有一个专门针对一氧化碳的排放标准，适用于低温下的机器开动。
Kinetics Study on Hydrolysis and Hydrocarbon Generation of Fatty Acid Ester Catalyzed by Marine Carbonate Hydrocarbon Source Rocks at Low Temperature;
海相碳酸盐烃源岩低温催化酯水解生烃动力学研究