concrete surface cleaning
91Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner …
92Abrasive — An abrasive is a material, often a mineral, that is used to shape or finish a workpiece through rubbing which leads to part of the workpiece being worn away. While finishing a material often means polishing it to gain a smooth, reflective surface …
93Hoe (tool) — For other uses, see Hoe (disambiguation). Azada redirects here. For video game by Big Fish Games, see Azada (video game). A person uses a hoe to cultivate vegetables. A hoe is an ancient and versatile agricultural tool used to move small amounts… …
94Painterwork — accomplishes two things, namely the preservation and the coloration of the material painted. The compounds used for painting, taking the word as meaning a thin protective or decorative coat, are very numerous, including oil paint of many kinds,… …
95Oil platform — A typical offshore oil/gas platform. An oil platform, also referred to as an offshore platform or, somewhat incorrectly, oil rig, is a lаrge structure with facilities to drill wells, to extract and process oil and natural gas, and to temporarily… …
96Milling cutter — Milling cutters are cutting tools typically used in milling machines or machining centres (and occasionally in other machine tools). They remove material by their movement within the machine (e.g., a ball nose mill) or directly from the cutter s… …
97Indoor air quality — (IAQ) is a term referring to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants. IAQ can be affected by microbial contaminants (mold, bacteria), gases (including… …
98Trisodium phosphate — Not to be confused with Sodium triphosphate. Trisodium phosphate[1] …
99Mat — This article is about a piece of fabric. For other uses, see Mat (disambiguation). A welcome mat from Lexington, Massachusetts. A mat is a generic term for a piece of fabric or flat material, generally placed on a floor or other flat surface, and …
100Coal breaker — A coal breaking plant, depicted on a postcard in 1907. A coal breaker was a coal processing plant which broke coal into various useful sizes. Coal breakers also removed impurities from the coal (typically slate) and deposited them into a culm… …
