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noun
- 1. the basic material from which a product is made: "these could be used as raw material"
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14 hours ago · Tin. Tin is a chemical element; it has symbol Sn (from Latin stannum) and atomic number 50. A silvery-colored metal, tin is soft enough to be cut with little force, [10] and a bar of tin can be bent by hand with little effort. When bent, the so-called "tin cry" can be heard as a result of twinning in tin crystals. [11]
6 hours ago · The science of metal extraction and magnetic separation is taught among many ordinary disciplines in academia, either within the purview of chemistry or that of materials science. It is the continuous stride in research to enhance extraction technologies, including bioleaching and new metallurgical processes that define an evolution in the offing.
14 hours ago · Space colonization is the use of outer space for colonization, such as permanent habitation, exploitation or territorial claims. Extraterrestrial colonization is its broader form, including the use of celestial bodies, other than Earth, for interplanetary colonization. The inhabitation and territorial use of extraterrestrial space has been ...
14 hours ago · American imperialism is the expansion of American political, economic, cultural, media, and military influence beyond the boundaries of the United States of America. Depending on the commentator, it may include imperialism through outright military conquest; military protection; gunboat diplomacy; unequal treaties; subsidization of preferred ...
14 hours ago · The Single Convention on Narcotic Drugs, 1961 (Single Convention, 1961 Convention, or C61) is a United Nations treaty that controls activities (cultivation, production, supply, trade, transport) of specific narcotic drugs and lays down a system of regulations (licenses, measures for treatment, research, etc.) for their medical and scientific uses; it also establishes the International ...
14 hours ago · The Samhitas (Sanskrit saṃhitā, "collection"), are collections of metric texts ("mantras"). There are four "Vedic" Samhitas: the Rig-Veda, Yajur-Veda, Sama-Veda and Atharva-Veda, most of which are available in several recensions (śākhā). In some contexts, the term Veda is used to refer only to these Samhitas, the collection of mantras.
14 hours ago · current location：Home > One primary characteristic of small strong springs is their spring constant, denoted by k, which measures the stiffness of the spring. The higher the val
