词汇	neutral hydrogen ring
释义	neutral hydrogen ring 天中性氢环
随便看	adjustable shore adjustable shore ramp adjustable short adjustable short-circuit terminal adjustable short circuit termination adjustable short-circuit termination adjustable short-circuti termination Adjustable shoulder strap adjustable shower head adjustable shutter adjustable shutter for radiator adjustable shuttering adjustable shutters for radiator adjustable sieve adjustable sight adjustable simplex pull rod adjustable sine conducting magnetic jig adjustable single end wrench adjustable single-end wrench adjustable siphon adjustable size aggregate adjustable-size aggregate adjustable size specification adjustable skid adjustable slide