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。
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。
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。
In the paper, the two injection ways of new RF system of Hefei storage ring were discussed.
讨论了合肥储存环新高频系统的两种注入模式。
The experimental system with two Er-doped fiber ring lasers is constructed.
构建了双环掺铒光纤环形激光器的实验系统。
Drive and control system for two-degree of freedom based on the ring-type travelling-wave ultrasonic motors is designed.
设计了基于超声波电机的二自由度机械臂的驱动控制系统电路。
Drive and control system for two-degree of freedom based on the ring-type travelling-wave ultrasonic motors is designed.
设计了基于超声波电机的二自由度机械臂的驱动控制系统电路。
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