1. 中心，核心
2. 轮毂，旋翼叶毂
3. 集线器
4. 【机】毂，轴，柄
5. 中枢
6. 电线插孔
7. 【机】衬套
8. 套壳，套
9. 中轴壳
10. 木片
11. 中继站
12. 中心所在
13. 丈夫

1. the central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes

2. a center of activity or interest or commerce or transportation; a focal point around which events revolve;

   "the playground is the hub of parental supervision"
   "the airport is the economic hub of the area"
   

1.（活动的）中心，核心
You can describe a place as ahub of an activity when it is a very important centre for that activity.

e.g. The island's socialhub is the Cafe Sport...
该岛的社交中心是“体育咖啡馆”。
e.g. As ahub of finance and communications, Paris is now almost equal to London.
作为一个金融和交通中心，巴黎现在几乎可媲美伦敦。

2.（轮）毂
Thehub of a wheel is the part at the centre.

hub什么意思

3.航空枢纽;中心机场
Ahub or ahub airport is a large airport from which you can travel to many other airports.

e.g. ...a campaign to secure Heathrow's place as Europe's main internationalhub.
旨在稳固希思罗机场作为欧洲主要航空枢纽地位的宣传活动

4.（网络）集线器
Ahub is a device for connecting computers in a network.

1. 花鼓：轮圈(Rims) + 钢丝幅条(Spokes) + 幅条接头(Nipples) + 花鼓(hub)像旅行车( Trekking Bike )可以加装货架,适合长途旅行如环岛的路程使用. 城市车( City Bike )适合在都市内当一个单车贵族短程通勤用.

2. 轮毂：主要产品及服务:在线检测设备; 刹车制动盘在线自动测量设备; 车桥自动测量设备; 外轮裂缝自动检查设备; 凸轮轴自动测量设备; 轮毂(hub)自动测量设备; 制动毂自动测量设备; 材料检测设备; 活塞自动测量设备; 连杆自动测量设备;

3. 集成器：计算机网络基础、WIN2000服务器的安装和管理、WIN2000无盘终端技术、综合布线、双绞线和同轴电缆的制作、集成器(hub)交换机(SWITCH)的安装、ADSL网吧的组建与日常维护.

4.hub：to hub; 跳接线