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- The seheme has preceptorial function to inducing the dust concentration and improving the job condition. 本方案对于降低综放工作面粉尘浓度,改善工人作业环境具有指导作用。
- Sublevel Mechanized caving method shows the characteristics of high out-put,more dust sources,high dust concentration and difficult to control. 煤矿综采放顶煤工作面开采强度大、产尘尘源多、粉尘浓度高,因而对尘毒的治理难度大。
- In the process of determination, Excel tables are used to calculate dust concentration to avoid man-made errors and improve accuracy. 为减少人为误差 ,我们采用Excel电子表格的数据处理能力 ,对测定的粉尘浓度进行统计计算 ,提高其准确度。
- Most work with insulation board is indoors and is likely to produce dust concentrations in the atmosphere exceeding the Control Limits. 大部分绝缘板的拆除作业均在室内进行,且产生的环境粉尘浓度很可能超出“控制限度”。
- The new type fume analog equipment can produce turbid gas and its velocity of flow and dust concentration can be known and adjusted. 新研制一种烟气模拟装置,能产生已知流速和含尘浓度的混浊气体,且浓度和流速可调。
- The optimal lectotype of entity structure in the condition of flue gas with high specific resistivity and high dust concentration has been studied. 研究了高比电阻和高含尘浓度烟气条件下本体结构的优化选型;
- By material balance equation, the dust concentrations measured at various directions of various testing spots of the louver board are determined, from wh... 据此,提出以半敞开方式排放烟气烟尘的除尘系统烟气烟尘浓度测试方法,即侧向间接测试法。
- The test results show that dust concentrations in tunneling working face can be satisfied with the national health standard by a high efficient deduster. 试验表明,采用高效除尘器对巷道凿岩工作面进行就地净化循环通风,能使工作面粉尘质量浓度符合国家工业卫生标准。
- The settled dust on the walls of the tunnel should be moistened with sticking agent.Only in this way,could the dust concentration in the whole tunnel be effectively controlled. 对巷道周壁的粉尘采用喷洒粘尘剂固尘,才能有效地降低整个巷道的粉尘浓度。
- Dust concentration from driving aspect to blowing holeis from high to low and presents vertical distribution.Pellet in laying blowpipe section presents horizontal distribution. 纵向分布呈现掘进面至送风口浓度曲线由高渐低,风管铺设段呈水平分布,提示风管铺设段隧道内污染物排出顺利。
- The motor car disappeared in eddy of dust. 汽车在一片扬尘的涡流中不见了。
- The forest will act as a defense against desert dust. 森林能起防御沙漠灰沙的作用。
- The car raised quite a dust as we drove off. 我们走时车子扬起了一阵尘土。
- A filter traps dust from the air. 过滤网可存住空气中的尘埃。
- How many enemies bit the dust in the battle? 在这次战斗中打死了多少敌人?
- The city lay in the dust after the battle. 战斗结束后,全城成为废墟。
- The dust on the shelf show up in the sunlight. 在阳光照射下能看见架子上有灰尘。
- He flicked away the dust with a cloth. 他用一块布拂去灰尘。
- Dust the repair to prevent adhesion to outer cover. 清整修补处以防与外胎粘连。
- Dust thou art, and unto dust shalt thou return. 你本是尘土就该归於尘土。