Etching is described as the use of chemicals to achieve a surface treatment.In terms of printing and drawing, it is printing process in which chemical agents are used to deepen lines drawn onto a printing plate.

Electrical thermometer refers to a thermometer indicating temperature variations by means of electrical current flowing through a circuit in which a galvanometer is inserted.

Egypt (officially the Arab Republic of Egypt), is a transcontinental country spanning the northeast corner of Africa and southwest corner of Asia via a land bridge formed by the Sinai Peninsula.

Deutsch: Verdampfer / Español: Evaporador / Português: Evaporador / Français: Évaporateur / Italiano: Evaporatore
An evaporator is a device used to turn the liquid form of a chemical into its gaseous form. The liquid is evaporated, or vaporized, into a gas.

Deutsch: Ausbeutung / Español: Explotación social / Português: Exploração / Français: Exploitation sociale
Exploitation is the use of someone or something in an unjust or cruel manner.
Most often, the word exploitation is used to refer to economic exploitation; that is, the act of using another person's labor without offering them an adequate compensation.

The European Union (EU) is a political and economic union of 27 member states that are located primarily in Europe.[6] The union has a total area of 4,233,255.3 km2 (1,634,469.0 sq mi) and an estimated total population of about 447 million. An internal single market has been established through a standardised system of laws that apply in all member states in those matters, and only those matters, where the states have agreed to act as one.

Evaluation is a systematic determination of a subject's merit, worth and significance, using criteria governed by a set of standards. It can assist an organization, program, project or any other intervention or initiative to assess any aim, realisable concept/proposal, or any alternative, to help in decision-making; or to ascertain the degree of achievement or value in regard to the aim and objectives and results of any such action that has been completed.

In the industrial/industry context, an engineer is a professional who applies scientific and mathematical principles to design, develop, test, and improve products, processes, systems, and structures. Engineers work in various industries, such as manufacturing, construction, automotive, aerospace, and technology, among others.