螺旋

The result of the caculation shows that the conventional auger drill stabilizer annular flow field has a weak ability in cutting-carrying and lifting; debris may deposite at the head, root of helical blade and the bottom side of the spiral channel.

计算表明：常规螺旋钻柱稳定器环空气体携岩举升能力弱，螺旋叶片头部、根部、螺旋流道下部下侧面容易出现岩屑滞留和沉积。

The main business cleaning table, the coal jig, the spiral chute, the flotation machine, the spiral sorting machine, the ball mill, the stirring chest, the feeding engine, for the ore machine, the shaker, the breaker, the sand pump, the magnetic ore separator, the water power sorting machine, the water power cyclone, hits the granulated substance machine, the laboratory sand pump, the laboratory table, the laboratory spiral chute, the laboratory flotation machine, the laboratory ball mill, the laboratory breaker, the laboratory magnetic ore separator, the laboratory adjusts the stuffchest, the grinder, products and so on vacuumfilter, in addition may make to order each kind of model according to the customer request the dressing mechanical device.

主营选矿摇床，跳汰机，螺旋溜槽，浮选机，螺旋分级机，球磨机，搅拌槽，给料机，给矿机，振动筛，破碎机，砂泵，磁选机，水力分级机，水力旋流器，打砂机，实验室砂泵，实验室摇床，实验室螺旋溜槽，实验室浮选机，实验室球磨机，实验室破碎机，实验室磁选机，实验室调浆桶，研磨机，真空过滤机等产品，另可根据客户要求定做各种型号的选矿机械设备。

On the base of studying the forming mechanism of spire ditches in deep-hole boring process, this paper analyses theoretically the effect of the boring bar diameter on the oscillation and spire ditches and established the mechanical model.

在研究深孔镗削螺旋沟产生机理的基础上，对深孔镗削加工过程中镗杆直径对振动及螺旋沟的影响进行了理论分析及力学建模，并通过试验研究了增大镗杆直径对减小振动和抑制螺旋沟的积极作用。

The important parameters of designed flutes, such as rake angle, clearance angle, are analyzed, and the calculating method of tangential vector, normal vector, and so on, is discussed.

基于刀刃曲线模型和刀槽螺旋面的生成原理，提出了可满足各种设计要求的刀槽螺旋面的几何建模方法，推导了铣刀和旋转锉的多种类型的刀槽螺旋面方程。

According to the dynamics analysis of the cotton sliver coiling process,by considering the minimum friction of cotton sliver caused by screwy pipes as objective function the design of screwy pipes of can coiler is explained based on the theory of the variational direct-method.

对棉条圈条过程定量地进行了动力学分析，以棉条所受曲线斜管摩擦力最小为目标函数，基于变分问题直接法原理设计出圈条盘螺旋形曲线斜管。这种螺旋形曲线斜管充分利用圈条盘的转动对棉条产生的离心力甩摆作用，使棉条所受曲线斜管摩擦力较小，从而使出条更顺畅；在一定程度上降低了圈条盘螺旋形曲线斜管堵眼频率与条筒乱条几率，使其更适应现代并条机生产高速化的要求

Main products of our company are crusher series, sand maker series, mine-selecting series and laboratory series: shaking table, jigger, spiral chute, flotation machine, spiral classifier, ball mill, mixing tank, feeding machine, feeder, vibrating screen, crusher, sand pump, magnetic separator, hydraulic grader, hydraulic cyclone, playing sand machine, laboratory sand pump, laboratory shaker, laboratory spiral chute, laboratory flotation machine, laboratory ball mill, laboratory crusher, laboratory magnetic separator, laboratory mixing barrels, grinding machines, vacuum filter, etc., and the other can be customized according to customer's requirements of various types of mineral dressing machinery and equipment.

公司主要生产有破碎设备、制砂设备、选矿设备、磨粉设备和实验室选矿设备五大系列产品：摇床，跳汰机，螺旋溜槽，浮选机，螺旋分级机，球磨机，搅拌槽，给料机，给矿机，振动筛，破碎机，砂泵，磁选机，水力分级机，水力旋流器，打砂机，实验室砂泵，实验室摇床，实验室螺旋溜槽，实验室浮选机，实验室球磨机，实验室破碎机，实验室磁选机，实验室调浆桶，研磨机，真空过滤机等产品，另可根据客户要求定做各种型号的选矿机械设备等成套选矿设备，适用于选铁、铜、金、银、铅、钨、钼、锰等有色金属矿及萤石、石英石等非金属矿，广泛应用于冶金、矿山、化工、建材、煤炭、耐火材料、学校等行业。

Main products of our company are crusher series, sand maker series, mine-selecting series and laboratory series: shaking table, jigger, spiral chute, flotation machine, spiral classifier, ball mill, mixing tank, feeding machine, feeder, vibrating screen, crusher, sand pump, magnetic separator, hydraulic grader, hydraulic cyclone, playing sand machine, laboratory sand pump, laboratory shaker, laboratory spiral chute, laboratory flotation machine, laboratory ball mill, laboratory crusher, laboratory magnetic separator, laboratory mixing barrels, grinding machines, vacuum filter, etc

公司主要生产有破碎设备、制砂设备、选矿设备、磨粉设备和实验室选矿设备五大系列产品：摇床，跳汰机，螺旋溜槽，浮选机，螺旋分级机，球磨机，搅拌槽，给料机，给矿机，振动筛，破碎机，砂泵，磁选机，水力分级机，水力旋流器，打砂机，实验室砂泵，实验室摇床，实验室螺旋溜槽，实验室浮选机，实验室球磨机，实验室破碎机，实验室磁选机，实验室调浆桶，研磨机，真空过滤机等产品，另可根据客户要求定做各种型号的选矿机械设备等成套选矿设备，适用于选铁、铜、金、银、铅、钨、钼、锰等有色金属矿及萤石、石英石等非金属矿，广泛应用于冶金、矿山、化工、建材、煤炭、耐火材料、学校等行业。

Experimental results indicate that the B/A value greatly affects the internal Nusselt number and friction factor of the twisted tube because the parameters decrease with the increase of B/A and S/d values, more rapidly with the former, and that the Nusselt number and friction factor of the twisted oblate tube increase respectively by 30%~150% and 20%~50%, as compared with those of the smooth tube at the same Reynolds number and Prandtl number.

实验结果表明：高扭曲比螺旋扁管的管内努塞尔数和阻力系数均随B/A值和S/d值的增大而减小，但随B/A值的增加而减小得更快，B/A值对高扭曲比螺旋扁管的管内传热与流阻性能影响更大；在相同雷诺数和普朗特数下，高扭曲比螺旋扁管管内的努塞尔数为光滑管的1.3~2.5倍；阻力系数为光滑管的1.2~1.5倍。

The helix angle is the same on each gear, but one gear must have a right-hand helix and the other a left-hand helix.

该螺旋角是一样的，每个齿轮的，但其中一个齿轮必须有一个右手边的螺旋和另一人左手螺旋。

The helix angle is the same on each gear, but one gear must have a right-hand helix and the other a left-hand helix.

螺旋角度是相同的在每个之上齿轮，但是一齿轮一定有一个用右手的螺旋和另一个一个左侧的螺旋。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了