The secondary role of the server is to listen in on a stream for events (a new edit, a message, or ticker change) and efficiently push responses back to clients.

服务器的第二个角色就是监听事件流(一次修改，一条信息，或者股票的实时变化)，并能高效的返回响应给客户端。

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The effects of curvature and torsion on secondary flow, isoline of stream function and distribution of the axial velocity of flow were discussed.

讨论了曲率和挠度对二次流动、流函数等值线和轴向速度的影响，研究了不同曲率和挠度螺旋管道内流量与压力梯度之间的关系。

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The nozzle flow is composed of the main gas stream and the secondary air stream in order to simulate the nozzle of turbofan engine.

喷管中的气流由主流燃气和次流空气组成，用以模拟涡扇发动机的喷管。

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You may be able to turn one of those into a secondary stream of income, which could lessen the blow, as you -- as you work on the other side.

CNN: Transcript of June 'CNN Money Summit: Money & Main St.'

As a secondary revenue stream, Golden Spike also intends to make money from media licensing on each trip.

FORBES: Golden Spike Aims To Take The World To The Moon - For $750M Per Ticket

And I began on that road a number of years ago, and it actually became a secondary income stream.

CNN: Transcript of June 'CNN Money Summit: Money & Main St.'