internal pressure test
41Alfa class submarine — The Soviet Union/Russian Navy Project 705 ( Лира / Lyra ) was a submarine class of hunter/killer nuclear powered vessels (abbreviated PLA: Podvodnaya lodka atomnaya , nuclear hunter/killer submarine). The class is also known by the NATO reporting …
42Hayabusa — This article is about the spacecraft. For other uses, see Hayabusa (disambiguation). Hayabusa A computer rendering of Hayabusa above Itokawa s surface Operator …
43Glossary of military abbreviations — List of terms, acronyms, information, related to modern armour, artillery, infantry, weapons, and related military subject matter.* AA anti aircraft * AAA anti aircraft artillery Triple A * AAAV Advanced Amphibious Assault Vehicle * AAD Armoured… …
44nebula — nebular, adj. /neb yeuh leuh/, n., pl. nebulae / lee , luy /, nebulas. 1. Astron. a. Also called diffuse nebula. a cloud of interstellar gas and dust. Cf. dark nebula, emission nebula, reflection nebula …
45Synthetic diamond — Synthetic diamonds of various colors grown by the high pressure high temperature technique Synthetic diamond is diamond produced in a technological process; as opposed to natural diamond, which is created in geological processes. Synthetic… …
46Cheng Rotation Vane CRV — Cheng Rotation Vane The Cheng Rotation Vane CRV® consists of a set of stationary vanes in a cylindrical body which is placed immediately upstream of an elbow or tee in a piping system. It eliminates elbow induced turbulence which negatively… …
47Buddy check — The buddy check is a procedure carried out by SCUBA divers using the buddy system where each diver checks that the other s diving equipment is configured and functioning correctly just before the start of the dive. [Sport Diving, p118,123,… …
48Space Shuttle orbiter — The Discovery orbiter approaches the ISS on STS 121 Operator NASA Mission type Orbiter …
49electricity — /i lek tris i tee, ee lek /, n. 1. See electric charge. 2. See electric current. 3. the science dealing with electric charges and currents. 4. a state or feeling of excitement, anticipation, tension, etc. [1640 50; ELECTRIC + ITY] * * *… …
50Natural ventilation — The ventilation system of a regular earthship. Natural ventilation is the process of supplying and removing air through an indoor space without using mechanical systems. It refers to the flow of external air to an indoor space as a result of wind …
