Unlike previously existing radio telescopes, which scan the sky for limited periods, the Allen telescope Array probed the universe round the clock.

不像在它之前的射电望远镜，只能在有限的周期内扫描天空，艾伦望远镜阵列可以昼夜不停地探测宇宙。

youdao

Fig. 1 CT plain scan showed a large round-like well-defined mass, with homogeneous density.

图1 CT平扫：腹膜后巨大类圆形软组织肿块，边缘光滑，密度均匀。

youdao

CT findings: the scan showed slightly higher density of occupancy with the shape of round or oval, without calcification or peripheral calcification.

CT检查所见：平扫一般表现为类圆形稍高密度占位，无钙化或边缘有钙化。

youdao

After five months he decided to make the 536km round trip to Bath for the scan.

BBC: Essex patient 'had to go to Bath for scan'

The radiation astronauts would face on a round trip would be comparable to getting an abdominal CT scan "about once every five days, " said Cary Zeitlin, principal scientist for the NASA-led Martian Radiation Environment Experiment.

CNN: SHARE THIS