Development of the seed-metering device test bench with sand-paving conveyor belt
输送带铺砂型排种器试验台的研制
A seed-metering device laboratory table with sand-paving conveyer belt was designed.
采用铺砂原理设计研制了排种器实验台,并针对实验工作参数复杂的特点,基于RS485总线技术设计了控制系统。
Based on strength test of cemented milled sand,the optinum transmitting density and cement to sand ratio are deterined for the fill preparation system updating,By using the updated system,the production problem is solved sucessfully.
根据凡口铅锌矿磨砂充填生产中存在的问题，以磨砂试块强度试验结果作为制备系统改造和完善的依据，并确定了料浆以高浓度输送和最佳的灰砂配比，从而解决了生产难题，在应用中获得了显著的经济效益。
his paper presents the laboratory research and mechanism of high sand-concentration hy-draulic fracturing,discusses the factors that influence the conductivity of fractured fissuresand the calculation methods of paved-sand content in fissures.
本文阐述了高砂比压裂的室内实验研究和矿汤工艺机理，讨论了压裂裂缝导流能力的影响因素和裂缝中铺砂浓度的计算方法，介绍了矿场高砂比压裂的增产效果和取得明显的经济效益。
Through sanding test,this paper calculates the surface texture s depth of bituminous pavement and aspect ratio between ETD and texture,carries out test selecting the points with different degrees of segregation,and shows the influences of segregation on the performance of bituminous pavement through contrast of testing data,in order to solve the problem of segregation in bituminous pavement.
通过铺砂试验测算沥青路面的表面构造深度,计算ETD和构造深度比,选取不同离析程度的点进行试验,再通过试验数据对比,显示了离析对沥青路面性能的影响,以解决沥青路面的离析问题。
The floor should be sanded before you paint it.
漆地板前应用砂磨。
All matte type screen (MB type)
全磨砂型屏(MB型)
To cover or treat with grit.
用砂覆盖,用磨料磨光
glossary of terms and marks used in abrasive, grinding wheel and abrasive cloth and paper
磨料、砂轮、砂布、砂纸术语和符号
retort with ground-in glass stopper
带磨砂玻璃塞的曲颈甑
belt conveyer abrasive belt surface grinder
输送带式平面砂带磨床
He rubbed the chain down with sandpaper.
他用砂纸把椅子磨光。
The floor has been sanded smooth.
地板已用砂纸磨光.
internal grinding head
内圆磨(砂轮主轴)头
disc wheel for steel wire needle sharpening
磨钢丝针用薄片砂轮
ceramic high heavy grinding wheel
陶瓷高强力磨削砂轮
automatic wheel wear compensator
砂轮磨耗自动补偿器
having the abrasive texture of sandpaper.
有砂纸的研磨质地的。
centerless cylindrical grinding machine with wide grinding wheel
宽砂轮无心外圆磨床
angular wheel slide grinding machine external
斜置砂滑座外圆磨床
twin grip type centerless grinder
双支承砂轮无心磨床
extension bar for grinding wheel axle of internal grinding machine
内圆磨床砂轮轴接杆
reinforced, toughened, frosted glass
强化、 韧化、 磨砂玻璃