mechanically
131E-Sky Lama model helicopters — The E Sky Lama family of model helicopters comprises small, 4 channel, remote controlled electric coaxial helicopters produced by E Sky. These include the original Lama, the Lama V2, Lama V3 and Lama V4, a series of coaxial remote control… …
132Completion (oil and gas wells) — This article is about the oil or gas well completion. For other uses of completion, see Completion (disambiguation) In petroleum production, completion is the process of making a well ready for production (or injection). This principally involves …
