The drive sprocket (60) has a central opening (29) for receiving the shaft.

所述驱动带轮(60)具有接收所述轴的中央开口(29)。

youdao

Integral flat head with or without a nozzle attached at the central opening.

中心开孔带或不带接管的整体平盖。

youdao

A symmetrical front facade includes two large ports for cars, positioned either side of a smaller central opening.

位于较小的中心开口的两侧形成对称的正立面，包括两个用于汽车的出入口。

youdao

It is part of broader cooperation between Interpol and Central African governments since the opening of the agency's regional bureau earlier this year.

VOA: standard.2009.11.09

Nord Anglia has four schools in central Europe and is opening one in South Korea.

ECONOMIST: Old schools are finding new markets abroad

Central to this was opening Jumbo up to the public but first repairs have to be carried out to deterioration caused by nearly three decades of neglect, the trust said.

BBC: Colchester's landmark water tower could open to public

Opening stores in the central business districts requires retailers to reconsider their merchandise assortment.

FORBES: Return to the City: Renewal of Inner City Retail Stores