Learn about how you can start your marine biology training right at community college! If you have a love of the ocean and a fascination with the creatures that live within its depths, a career in marine biology might be the right choice for you.
1 Ladder chain, a light wire chain used with sprockets for low torque power transmission. 2  Lavatory chain, the chain attached to the cistern of an old-fashioned W.C. in which the flushing power is obtained by a gravity feed from above-head height.
There are different types of impellers and different types of casings. The way that different types of impellers and casings are combined produces all of the different types of pumps. There two basic types of pump casings: volutes and diffusers.