The meter is devided into two parts: the primary meter (detector) and the secondary meter.
该仪器分为一次表（探头）和二次表两部分。
This instrument can measure automatically the oil consumption at the normal rating and the r. p. m. of the supercharger and the diesel, fitting with the corresponding primary meter.
这种装置可以自动测试柴油机在额定状态运行下的油耗率，并配合相应的一次元件能自动测试柴油机和增压器的转速。
The Thirty Meter Telescope's massive primary mirror has 492 segments, all perfectly aligned to form a 30-meter (98-foot) light-collecting surface.
30米望远镜的巨型主镜分割成了492块，完美地排列从而形成30米(98英尺)的集光面。
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