大轴

The stress and radial displacement will increase with the increment of half cone angle and lead.

螺旋输送器的最大应力强度和最大径向位移均与转速近似地成二次方关系；减小叶片壁厚，沉渣对螺旋叶片作用的正压力所引起的叶片的最大轴向位移增长较快；正常工况下，螺旋输送器的最大应力强度和最大径向位移都随着半锥角和导程的增加而增大。

The max stress and the max radial displacement of conveyor is also proportional to the square of rotational speed. With the decrease of the blade thickness, both the stress and axial displacement of conveyor increase rapidly. The stress and radial displacement will increase with the increment of half cone angle and lead.

螺旋输送器的最大应力强度和最大径向位移均与转速近似地成二次方关系；减小叶片壁厚，沉渣对螺旋叶片作用的正压力所引起的叶片的最大轴向位移增长较快；正常工况下，螺旋输送器的最大应力强度和最大径向位移都随着半锥角和导程的增加而增大。

T he b iggest v alue o f a xial t ensile s tress i n c oncrete u nder t he a ction o f w ater p ressure a nd thermal load could be as high as 4.23MPa, which will lead the occurrence of circumferential cracks. So reinforcement along the axial direction must be laid.

在常规荷载和温降荷载共同作用下，斜直管段混凝土最大轴向拉应力可达4.23MPa，已经远远超过了C25混凝土的设计抗拉强度1.3MPa，在管道混凝土内可能出现环向裂缝，因此在进行管道轴向配筋时应采取一定工程措施。

H.伸缩环转动环伸缩环垫片前轴封 S D / L D / S L M E C H A N I C A L S E A L P U M P S SD/LD/SL SERIES PUMPS The SD/LD/SL series are dependable, self priming pumps. The full motor horsepower is translated into fow via the shaft. These pumps are used for a wide range of applications, from chemical transfer to process solution recirculation to waste treatment. This series is capable of self-priming up ro 20 feet of lift. The mechanical seal is a self-cooling, Tefon bellows which is cooled by the solution being pumped. The construction materials and seals avaiable make this pump extremely versatile. The horizontal design has a working temperature from167℉ to 194℉(75℃ to 90℃), depending on the material of construction, and can handle most chemical solutions. The SD/LD/SL series pumps are designed to run outside the tank or process module. The SD/LD series pumps incorporate a FRPP molded base, legs and pump-to-motor casing. There are no bolts or metallic parts in contact with the solution being pumped.

SD/LD/SL泵是可靠的自吸泵，马达全部的马力经由轴心完全转化为流量，此型泵广泛地使用於从化学药水循环或加工溶液循环到废水处理等各种用途，此型泵可自吸达20英呎，机械轴封是自我冷却的，经由抽送的溶液来冷却，可供应的不同结构材质及轴封使此种泵的用途非常多样化，依其结构材料的不同，其卧式设计的工作温度由75℃到90℃(167℉到194℉)，而且可处理绝大部份的各种溶液，SD/LD/SL是设计用於槽外或加工模组之用，SD/LD加入一个FRPP射出成型的脚座，脚架及泵到马达的外罩，没有螺栓或金属会接触到所抽送的溶液。

The frequency about 30KHZ small may quench Φ10 about the high accuracy axis,the hard level maintains in 1 mm,may quench ￠250 the diameter macro-axis,also may quench Φ500 about the gear.

淬火类设备 Quenching class equipment 频率在30KHZ左右，小者可淬Φ10左右高精度小轴，淬硬层保持1.5mm以内，可淬Φ250直径大轴，也可淬Φ500左右齿轮。1、汽车配件、摩托车配件的淬火处理。2、机械零件的热处理。

The frequency about 30KHZ small may quench Φ10 about the high accuracy axis,the hard level maintains in 1 mm,may quench ￠250 the diameter macro-axis,also may quench Φ500 about the gear. 1、Quenching of The car fittings,the motorcycle fittings are dealt with 2、Metal parts heat treatment.

淬火类设备 Quenching class equipment 频率在30KHZ左右，小者可淬Φ10左右高精度小轴，淬硬层保持1.5mm以内，可淬Φ250直径大轴，也可淬Φ500左右齿轮。1、汽车配件、摩托车配件的淬火处理，铜陵高频感应加热厂家厂家电话：。2、机械零件的热处理。

AbstractObjectives1 Correlate bone mineral densityto vertebral compressive strengths.2 Consummate the technique for percutaneous polymethylmethacrylate vertebroplasty and observe the pattern of PMMA imaging distribution.3 Determine the strength and stiffness of osteoporotic with or without vertebroplasty with PMMA bone cement.4 Correlation of BMD,insertion torque and pull-out strengths of pedicle screws.5 Ascertain whether augmentation with PMMA bone cement can enhance pedicle screw fixation in the osteoporotic spine.6 Ascertain whether augmentation pedicle screw fixation with PMMA bone cement can enhance the stability of unstable thoracolurner burst fractures of osteoporotic spine.

目 的1、测试椎体压缩强度，分析强度与骨矿物质密度（bone mineral density，BMD）的相关关系。2、观察经皮椎体成形术后聚甲基丙烯酸甲脂（polymethylme- thacrylate，PMMA）骨水泥在椎体内的形态学分布及影像学表现。3、比较PMMA骨水泥骨质疏松椎体成形术前/后椎体最大抗压力和压缩刚度的变化。4、分析椎体BMD、螺钉最大旅入力矩和最大拔出力三者之间的关系。5、分析PMMA骨水泥强化骨质疏松椎弓根螺钉后的螺钉的最大轴向拔出力和拔出刚度的变化。6、评价PMMA骨水泥强化骨质疏松椎弓根螺钉脊柱内固定对不稳定型胸腰椎损伤的即刻稳定性和反复载荷后的稳定性。

In the maximal axial pulling-out force group, the hollow nails were directly implanted into 10 femoral neck samples after drilling at the axial center.

最大轴向拔出力实验分组，10个股骨颈在轴向正中钻孔后直接置入空心钉，另10个股骨颈在轴向正中钻孔后注入聚甲基丙烯酸甲酯骨水泥，然后置入带侧孔的空心钉。

The pulling out experiment was performed by AGS-10KN material testing machine to measure the maximal axial pulling-out strength of hollow nail and the maximal loading when the nail was loose during anti-bending cycle experiments.

结果：①置入空心钉10个股骨颈的最大轴向拔出力为471.5~1 070.5 N，平均(855.0±207.5)N；而添加聚甲基丙烯酸甲酯侧孔空心钉后最大轴向拔出力在2 023.7~3 572.1 N，平均(2 943.3±535.8)N。

In the maximal axial pulling-out force group, the hollow nails were directly implanted into 10 femoral neck samples after drilling at the axial center. The polymethyl methacrylate bone cement was inserted into other 10 femoral neck samples after drilling at the axial center, and the side-hole hollow nail were then implanted.

最大轴向拔出力实验分组，10个股骨颈在轴向正中钻孔后直接置入空心钉，另10个股骨颈在轴向正中钻孔后注入聚甲基丙烯酸甲酯骨水泥，然后置入带侧孔的空心钉。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。