•
These lines do not show on the diagram.
•
Several of these features are visible (or seen) in Fig. 18.3.
•
Another smoke ring is evident near the galactic centre.
II
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The secondary radiation emitted is viewed through a collimator at an angle of 90° to the incident beam.
Русско-английский научно-технический словарь переводчика. Михаил Циммерман, Клавдия Веденеева. 2003.