concrete surface cleaning
71Flooring — An example of a flooring job. Levelling of ceramic tiles floor with a laser dev …
72Disasters — ▪ 2009 Introduction Aviation January 23, Poland. A Spanish built CASA transport plane carrying members of the Polish air force home from a conference on flight safety in Warsaw crashes near the town of Miroslawiec; all 20 aboard are killed …
73Washing machine — This article is about the laundry cleaning apparatus. For the Sonic Youth album, see Washing Machine (album). A typical modern front loading washing machine Irreler Bauerntradition shows an early Miele was …
74Sprung floor — A sprung floor is a floor that absorbs shocks giving it a softer feel. Such floors are considered the best available for dance and indoor sports and physical education.They enhance performance and greatly reduce injuries. Modern sprung floors are …
75Electrical conduit — risers, seen inside fire resistance rated shaft, as seen entering bottom of a firestop. The firestop is made of firestop mortar on top, rockwool on the bottom. Raceways are used to protect cables from damage …
76abrasive — abrasively, adv. abrasiveness, n. /euh bray siv, ziv/, n. 1. any material or substance used for grinding, polishing, etc., as emery, pumice, or sandpaper. adj. 2. tending to abrade; causing abrasion; abrading. 3. tending to annoy or cause ill… …
77Materials science — Simulation of the outside of the Space Shuttle as it heats up to over 1,500 °C (2,730 °F) during re entry into the Earth s atmosphere Materials science is an interdisciplinary field applying the properties of matter to various areas of… …
78New York City Subway — Top: A number 4 train made up of R142 …
79Polyurea — is a type elastomer that is derived from the reaction product of an isocyanate component and a synthetic resin blend component. The isocyanate can be aromatic or aliphatic in nature. It can be monomer, polymer, or any variant reaction of… …
80LACMTA Expo Line — The Metro Expo Line of the Los Angeles County Metro Rail is a light rail line currently under construction in Los Angeles County, California, USA, which will run from Downtown Los Angeles to Culver City and eventually to Santa Monica. Its route… …
