4.The mantid ear -- a single slit -- is sensitive to the ultrasonic "pings" emitted by hunting bats.
螳螂的耳朵只有一条裂缝,对于蝙蝠发出的超声波非敏感。
5.In a testing of petrolic engine, about 70% to 80% of nonmethane hydrocarbon is emitted into atmosphere without catalysis conversion in theoment of coldstart, so that serious pollution is produced.
6.The paper reports a method and a spectropolarimeter for determining the polarization state of an emitted or reflected light in terms of its Stokes parameters.
出了通过测量斯托克斯参量,进而确定全偏振态的一种方法。
7.The silicon light emitting device also can be used as a photoreceiver under reverse bias, receiving the light emitted from the other one.