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- The gas evolution test method has the advantage that the effective coal dust content in green sand can be determined rapidly and accurately. 摘要发气量试验方法的优点是能够迅速和准确地确定型砂中有效煤粉的具体含量。
- Determining Method of Effective Coal Dust Content of Green Molding Sand Suitable for Middle and Small Foundries 中小铸造工厂适用的有效煤粉含量测定方法
- effective coal dust content 有效煤粉含量
- The effective cost dust content of molding sand should be determined according to time factors such as the quality of the coal dust, casting size and thickness, pouring temperature, lacing sand or unit sand, and so on. 决定型砂中的有效煤粉含量应根据煤粉质量的优劣、铸件大小和厚薄，浇注温度、面砂或单一砂等因素。
- His face and hands were covered with coal dust. 他的脸和双手沾满了一层煤灰。
- His face and hands were covered with grime from the coal dust. 他的脸和双手沾满了一层煤灰。
- A block of compressed coal dust, charcoal, or sawdust and wood chips, used for fuel and kindling. 煤砖，炭砖把煤灰，木炭或锯木灰和木片压缩制成的砖块状物，用作燃料和点火
- His face and hands were coverd with grime from the coal dust. 他的脸和双手都沾满了煤灰和污垢。
- He became ill after breathing in a lot of coal dust. 他吸入大量的煤灰之后病了。
- The modern city consists of monstrous edifices and of dark narrow streets full of petrol fumes, coal dust, and toxic gases. 现代城市是由大得怕人的大厦和充斥着难闻的汽油味，煤灰和有毒气体和又阴暗又狭窄的街道所组成。
- He became ill after breathing coal dust for many years. 他因多年吸入煤灰而生病了。
- His face and hands were covered with grime from the coal dust . 他的脸和双手沾满了一层煤灰。
- Coal worker's pneumoconiosis results from inhalation of coal dust. 煤炭工人的煤尘肺是由吸入煤矿粉尘引起。
- He carried out trial runs using rockets stuffed with coal dust. 他用填满煤粉的火箭式烟火装置来进行试验。
- Winds with continental provenances frequently have a higher dust content than those with maritime provenances. 来自大陆的风比来自海洋的风通常具有更高的尘埃含量。
- Experiments were made on the effect of solid inert mediums on the coal dust explosion pressure and the pressure rise rate. 通过对固体惰性介质在减轻煤粉爆炸作用的实验研究,给出影响固体惰化剂作用效果的主要影响因素。
- Waste from anthracite coal mines,consisting of fine coal,coal dust,and dirt. 无烟煤废渣无烟煤煤矿的废弃物，由细粒无烟煤、煤尘和尘土构成
- The dust content in carbon dioxide gas is an important index used in the process step of carbonating decomposition in alumina production. 在氧化铝生产中,二氧化碳气体的含尘量是碳分生产工序中的一项重要指标。
- Waste from anthracite coal mines, consisting of fine coal, coal dust, and dirt. 无烟煤废渣无烟煤煤矿的废弃物，由细粒无烟煤、煤尘和尘土构成
- He moved the coal cakes away, and there was only coal dust left on the floor. 他把煤饼搬走了，地下只剩下一层煤末。
