ТОР 5 статей:
Методические подходы к анализу финансового состояния предприятия
Проблема периодизации русской литературы ХХ века. Краткая характеристика второй половины ХХ века
Характеристика шлифовальных кругов и ее маркировка
Служебные части речи. Предлог. Союз. Частицы
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Additional literature and resources. 2. http://environment.about.com/od/globalwarming/a/greenhouse.htm
2. http://environment.about.com/od/globalwarming/a/greenhouse.htm
3. Clive Oxenden, Christina Latham-Koenig New English File Advanced. Student Book, Oxford University Press 2010
4. First Certificate. Language Practice. Macmillan 2003
5. www.Englishpage.com
| Hand out #7 Discipline: Professional English Lexical theme: Devices used for fastening Credits:2 Grammar theme: Verbal. Infinitive Assistant professor G.A. Tolynbekova |
Vocabulary
Exercise 1. Look at the definitions of the word and compare them with their pictures.
A fastener is a hardware device that mechanically joins or affixes two or more objects together.
Furniture supplied in flat-pack form often uses cam dowels locked by cam locks, also known as conformant fasteners.
Some types of woodworking joints make use of separate internal reinforcements, such as dowels or biscuits, which in a sense can be considered fasteners within the scope of the joint system, although on their own they are not general purpose fasteners.
Items like a rope, string, wire (e.g. metal wire, possibly coated with plastic, or multiple parallel wires kept together by a plastic strip coating), cable, chain, or plastic wrap may be used to mechanically join objects; but are not generally categorized as fasteners because they have additional common uses.
Likewise, hinges and springs may join objects together, but are ordinarily not considered fasteners because their primary purpose is to allow articulation rather than rigid affixment.
Other alternative methods of joining materials
include: crimping, welding, soldering, brazing, taping, gluing,
cementing, or the use of other adhesives. The use of force may also be used, such as with magnets, vacuum (like suction cups), or even friction.
There are three major steel fasteners used in industries: stainless steel, carbon steel, and alloy steel. The major grade used in stainless steel fasteners: 200 series, 300 series, and 400 series.
Stainless Steel Fastener s: 1. Hexagon nut 2. Hex head bolt / screw
3. Nylon lock nut 4. Cap nut 5. Machine screw...
Exercise 2. Read the text. [2]
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