natural gas vehicle
31Compressed-air vehicle — The Victor Tatin airplane of 1879 used a compressed air engine for propulsion. Original craft, at Musée de l Air et de l Espace …
32Neighborhood Electric Vehicle — NEV redirects here. For other uses, see NEV (disambiguation). U.S. Army NEVs A Neighborhood Electric Vehicle (NEV) is a U.S. denomination for battery electric vehicles that are legally limited to roads with posted speed limits as high as 45 miles …
33Wind-powered vehicle — Wind powered vehicles have traditionally been associated with seafaring vehicles that, until the advent of steam engines, relied primarily upon winds which were used to drive the sails of such vehicles to their destinations. In the Western world …
34Ultra Low Emission Vehicle — An ultra low emission vehicle is a vehicle that emits extremely low levels of air pollutants compared to other vehicles. The term may be used in a general sense, but in some jurisdictions it is defined in law; low and ultra low emission vehicles… …
35Natural oil polyols — Natural oil polyols, also known as NOPs or biopolyols, are polyols derived from vegetable oils by several different techniques. The primary use for these materials is in the production of polyurethanes. Most NOPs qualify as Biobased Products, as… …
36Natural rubber — Rubber and India rubber redirect here. For other uses, see Rubber (disambiguation). This article is about the polymeric material natural rubber. For man made rubber materials, see Synthetic rubber. Latex being collected from a tapped rubber tree …
37gas tank — noun a tank for holding gasoline to supply a vehicle • Syn: ↑gasoline tank, ↑petrol tank • Hypernyms: ↑tank, ↑storage tank • Part Holonyms: ↑fuel system * * * noun …
38Air gas — Gas Gas (g[a^]s), n.; pl. {Gases} (g[a^]s [e^]z). [Invented by the chemist Van Helmont of Brussels, who died in 1644.] 1. An a[ e]riform fluid; a term used at first by chemists as synonymous with air, but since restricted to fluids supposed to be …
39Natural building — A natural building involves a range of building systems and materials that place major emphasis on sustainability. Ways of achieving sustainability through natural building focus on durability and the use of minimally processed, plentiful or… …
40natural oils — Oil Oil (oil), n. [OE. oile, OF. oile, F. huile, fr. L. oleum; akin to Gr. ?. Cf. {Olive}.] Any one of a great variety of unctuous combustible substances, more viscous than and not miscible with water; as, olive oil, whale oil, rock oil, etc.… …
