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- tar cracking zone 焦油裂化区域
- The effects of temperature and residence time on tar cracking in the freeboard of a fluidized bed have been investigated in order to reduce the tar produced in the pyrolysis process of coal. 为降低煤在热解过程中的焦油产率,在一流化床稀相段考察了温度和停留时间对焦油裂解的影响。
- Analysis was performed on the crack zone by macroscopical, microscopical and hardness testing. 采用宏、微观分析方法对断裂原因进行了分析。
- There exits bed separation zone above water-conducting crack zone overburden after coal mining. 煤层采后覆岩中的导水裂隙带之上存在离层带。
- Based on the fractal characteristic of concrete material,the relation between fracture toughness and height of crack zone is analyzed. 根据混凝土材料裂纹的分形特性,分析了混凝土的断裂韧度与裂纹带高度之间的变化关系。
- Based on the fractal characteristic of concrete material, the relation between fracture toughness and height of crack zone is analyzed. 摘要根据混凝土材料裂纹的分形特性，分析了混凝土的断裂韧度与裂纹带高度之间的变化关系。
- Research progress of catalysts for tar cracking 焦油裂解用催化剂的研究进展
- Keywords tar cracking;fluidized bed;freeboard; 焦油裂解;流化床;稀相段;
- In transient crack zone, the SEM fractographs of base metal consisted of equal-axis ductile voids, the fusion zone was mainly consisted of course transgranular cleavage facets. 在瞬断区，母材由等轴韧窝组成，而熔合区主要为粗大的穿晶解理平面。
- Introducing the time-dependent damage variable into the constitutive equations of the crack zone, we modified the Dugdale model of crack damage zone around crack-tip. 对裂尖银纹损伤区的Dugdale模型进行了修正，将时间、位置、应变相关的损伤变量引入到银纹区的本构方程中。
- Keywords tar cracking;calcium oxide;fluidized bed;freeboard; 焦油裂解;氧化钙;流化床;稀相段;
- EFFECT OF CaO ON TAR CRACKING IN A RAPID-PYROLYSIS FIXED BED REACTOR 煤快速热解过程中氧化钙对焦油裂解的影响
- Peter had his head in a tar barrel sure enough. 不出所料，彼得陷入了困境。
- Influence of Calcium Oxide on Tar Cracking in Freeboard of Fluidized Bed 氧化钙在流化床稀相段对焦油裂解的影响
- A little crack detracts from the value of the vase. 小小的裂痕减损那个花瓶的价值。
- Tar is much used in making modern roads. 修建现代公路多用焦油沥青。
- The Norwegians live in a comparatively cold zone. 挪威人生活在比较寒冷的地区。
- The marchers jumped off at the crack of dawn. 行军队伍在破晓时出发了。
- The riot police started to crack down on them. 防暴警察开始对他们采取镇压行动。
- Supplies were parachuted into the earthquake zone. 救援物资已空投到地震区。
