双轴

This allowed them to follow 431 "lineages" of marine bivalve through the course of geological time.

这样，他们便可以沿着地质学的时间轴逐个研究431支海洋双壳类的&世系&。

The bimetal bushing for spring bush , piston pin , rocker arm , connecting rod , cam shaft , balance shaft and other applications of bimetal bushings .

双金属轴承应用于：弹簧销，活塞销，摇臂，连杆，凸轮轴，平衡轴等部件。

These packs then travel to a Palpack PS/DS palletizer, designed as a twin-column system on a vertical working axis.

然后这些包装物移动到一个 Palpack PS/DS 码垛机，它被设计成在一个垂直工作轴上的一种双支柱系统。

Supply Taiwan 3 assist energy-saving axis sheds import environmental protection fan FP-108K brand: 3 assist dimension: 2220 × of 20 × 60mm voltage: AC230V wind force: 360CFM power: 46/40W revolution: 2850/3400RPM noise: 50/53DB producing area: Material of the casing outside Taiwan is qualitative: Aluminium alloy motor: Overspread extremely motor structure; Frame: Die-casting of aluminium alloy of the black lacquer that bake is anticorrosive, water-vapor proof structure; Wind leaf: High temperatu

供给中国台湾三协入口环境保护节省能源轴流风机FP-108K品牌：三协大小：220×220×60mm电压：AC230V风力：360CFM码率：46/40W转数：2850/3400RPM噪声：50/53DB生产地方：中国台湾外框材料：铝合金发动机：罩极发动机构架；范围：黑烤漆铝合金压铸防止腐败、防湿构架；风叶：耐温高塑胶扇叶；轴承：高细度、长命命双滚珠轴承；绝缘：漆包线使用B级绝缘，耐温高80慑氏度；绝缘电诅：800兆欧以上；耐电压：泻走电流0.5mA，耐电压2300V/1分钟；运行温度：-25慑氏度到+55慑氏度周围的环境温度40度时课接连着工作3200钟头储存温度：-25慑氏度到+55慑氏度

The results show that the tangential velocity distribution in the annular space shows a typical feature of strongly swirling flows and it consists of quasi-free vortex area and quasi-forced vortex area.

由于流体与双侧壁面之间的摩擦造成能量损失和湍流能量耗散，导致最大切向速度不断衰减且位置沿轴向向下逐渐向提升管外壁移动，同时涡量传递造成外部的准自由涡区逐渐增大，内部的准强制涡区逐渐缩小。

Changsha, Hunan Tianming Machinery Industrial Co., Ltd. is a transmission gear, rack, chain wheel, crane slewing reducer, coupling, machine tool accessories, dual-metal bushing, pulley, bevel gear, helical gear, charcoal machine, worm gear, non - Standard design and processing, construction of the lift gear, manual steam valve, screw and nut, machine, ring gear, spline shaft and other products Co., Ltd. specializes in processing, the company is headquartered in Changsha, Hunan, Changsha, Hunan Tianming transmission machinery Industrial Co., Ltd. has a complete and scientific quality management system.

湖南长沙天明传动机械实业有限公司是齿轮、齿条、链轮、塔吊回转减速机、联轴器、机床配件、双金属衬套、皮带轮、锥齿轮、螺旋齿轮、木碳机、蜗轮蜗杆、非标设计及加工、施工电梯齿轮、手动汽阀、丝杆及螺母、分切机、内齿轮齿圈、花键传动轴等产品专业生产加工的股份有限公司，公司总部设在湖南长沙，湖南长沙天明传动机械实业有限公司拥有完整、科学的质量管理体系。

East brand products mainly single, double bridge, gantry crane; insulation bridge crane; explosion-proof bridge crane; wire rope electric hoist, and so on and accessories (wheels, of drum group, hook group, pulley blocks, Coupling), and other top-five 600 species.

东起牌产品主要是单、双梁桥、门式起重机；绝缘桥式起重机；防爆桥式起重机；钢丝绳电动葫芦等及配件（车轮组、卷筒组、吊钩组、滑轮组、联轴器）等五大类六百余种。

Two pairs of chutes and holes on the cleaning base and the brushes form the double chute swing mechanisms by the connection of an axis and cause the brush to cling to the wall surface to clean by the friction feedback, thus achieving effective cleaning when walking error occurs and the pipe section changes, furthermore, the larger the friction on the wall surface is, the larger the forward pressure on the wall surface is, therefore, the dirtier the wall surface is, the higher the cleaning efficiency is.

清扫底座与刷子夹上的两对滑槽和孔通过轴的连接形成双滑槽摆动机构，并通过摩擦力反馈使得刷子能够紧贴壁面进行清洗，从而在出现行走误差和管道截面变化时都能够有效清洗，并且壁面摩擦力越大刷子作用在壁面上的正压力越大，因此壁面越脏时清扫效率越高。

Available in Class 150, 300 and 600, these valves feature a double offset pivot which reduces wear between the seat and seal while the valve is in motion.

压力等级包括Class 150， 300和600。这种阀门配置双效补偿枢轴，能够减少阀门工作期间阀座与密封之间的磨损。

This machine uses the equipment of two-cylinder balance compression and special hydraulic system which make the power more stable.

该机使用双缸平衡压缩，特殊的液压系统，动力更稳定。高负荷结构，安全可靠。使用了高流量轴向柱塞泵。

This paper discusses design and realizable methods of remote test output interface from logical design angle.

本文从逻辑设计的角度讨论遥测输出接口的设计及实现方法。

This also 星体投射plies to buildings, structures and geological features.

这也适用于建筑物和地质特征。