flat+circular+surface
61Geotechnical investigation — Geotechnical investigations are performed by geotechnical engineers or engineering geologists to obtain information on the physical properties of soil and rock around a site to design earthworks and foundations for proposed structures and for… …
62Drag-resistant aerospike — Trident I first launch on 18 January 1977 at Cape Canaveral. The thin antenna like structure mounted on the nose cone is the aerospike, which is composed of 2 parts. 1) The Extensible Boom is the long, slender, slightly tapered cylindrical… …
63disc — n. (also disk esp. US and in sense 4) 1 a a flat thin circular object. b a round flat or apparently flat surface (the sun s disc). c a mark of this shape. 2 a layer of cartilage between vertebrae. 3 a gramophone record. 4 a (usu. disk; in full… …
64placenta — placental, placentary /plas euhn ter ee, pleuh sen teuh ree/, adj. /pleuh sen teuh/, n., pl. placentas, placentae / tee/. 1. Anat., Zool. the organ in most mammals, formed in the lining of the uterus by the union of the uterine mucous membrane… …
65Wassily Kandinsky — Wassily Kandinsky, c. 1913 or earlier Birth name Wassily Wassilyevich Kandinsky Born 16 December [O.S. 4 December] 1866 Moscow …
66P-61 Black Widow — Infobox Aircraft name = P 61 Black Widow caption = A P 61A 1NO of 419th Night Fighter Squadron type = Night fighter national origin= United States manufacturer = Northrop designer = first flight = 26 May 1942 introduced = 1944 retired = 1952… …
67magnetic recording — magnetic recorder. the process of recording sound or other data on magnetic tape, wire, etc. [1940 45] * * * ▪ electronics Introduction method of preserving sounds, pictures, and data in the form of electrical signals through the selective… …
68Mycena stylobates — Scientific classification Kingdom …
69Northrop P-61 Black Widow — P 61 Black Widow A P 61A 1NO of 419th Night Fighter Squadron Role Night fighter …
70Callisto (moon) — Callisto View of the heavily cratered terrain of Callisto s anti Jovian hemisphere obtained in 2001 by NASA s Galileo spacecraft. The large impact structure Asgard is on the limb at upper right. The prominent rayed crater below and just right of… …
