material of the stock screw is selected
11environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …
12railroad — /rayl rohd /, n. 1. a permanent road laid with rails, commonly in one or more pairs of continuous lines forming a track or tracks, on which locomotives and cars are run for the transportation of passengers, freight, and mail. 2. an entire system… …
13Milling 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… …
14Sea shanty — For the song Sea Shanty by Quasi, see Featuring Birds For the album Sea Shanties by English band High Tide, see High Tide (band). Sailors sang shanties while performing shipboard labor A shanty (also spelled chantey , chanty ) is a type of work… …
15ancient Rome — ▪ ancient state, Europe, Africa, and Asia Introduction the state centred on the city of Rome. This article discusses the period from the founding of the city and the regal period, which began in 753 BC, through the events leading to the… …
16Diffusion of technology in Canada — This article outlines the history of the diffusion or spread of technology in Canada. Technologies chosen for treatment here include, in rough order, transportation, communication, energy, materials, industry, public works, public services… …
17furniture industry — Introduction all the companies and activities involved in the design, manufacture, distribution, and sale of functional and decorative objects of household equipment. The modern manufacture of furniture, as distinct from its design,… …
18metalwork — metalworker, n. /met l werrk /, n. objects made of metal. [1840 50; METAL + WORK] * * * Useful and decorative objects fashioned of various metals. The oldest technique is hammering. After с 2500 BC, casting was also used, molten metal being… …
19building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
20Bernard Marshall Gordon — (born in 1927), American inventor and philanthropist, is generally called Bernie rather than Mr. Gordon by associates and subordinates. [As of January, 2007, the book of Bernie s earthly life is still open. Consequently there are no scholarly… …
