Observations from NASA's Spitzer Space Telescope show that the system hosts two asteroid belts, in addition to previously identified candidate planets and an outer comet ring.

斯比策空间望远镜的观测显示，这个行星系统控制着两条小行星带，比上次我们确定的多了一条。

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The containment spray system consists of two pumps, spray ring headers, a spray additive tank, a number of motor operated isolation valves and all necessary piping, instruments etc.

安全壳喷淋系统内有两台喷淋泵，喷嘴，喷淋添加箱，许多安全壳隔离阀和相关的管道仪表等。

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The system realized intelligent inspection function of the wheel and ring ultrasonic testing in two on-lines.

本系统实现了车轮、轮箍两条超声波探伤生产线智能化检测功能。

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One of his main aims, which Mr Zeman seems to share, is to change the electoral system to encourage a broadly two-party system to emerge, rather than the present one in which small parties tend to hold the ring.

ECONOMIST: The Czech Republic