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ค้นเจอ 82 รายการ

phenoplast

( เคมี ) เป็นคำที่ใช้เรียก phonel aldehyde resins กับอีกคำที่เป็นคำเดียวกัน และรู้จักกันทั่วไปคือ " phenolics "

cast phenolic resins

(เคมี, พล๊าสติค) ยางซึ่งเตรียมได้จาก phenol กับ formaldehyde เป็นยางที่มีกำลังต้านทานการดึงและการกดดันสูงมากไม่ไวไฟ

naphthenes

(เคมี) คือ Polymethylene hydrocarbons ซึ่งจะพบมากในน้ำมันปิโตรเลี่ยม

Greenhouse gases

(Environmental Engineering) Gases which trap solar radiation. Of the solar energy entering the earth's atmosphere a portion is reflected back and a portion penetrates onto the earth's surface. The portion reflected back from the earth's surface is at a different wavelength that when it entered. Carbon dioxide and other gases, which pass solar radiation, absorb this reflected radiation, increasing the earth's temperature. This is much like a greenhouse, hence the name.

Brinell Hardness Test

(english) A common standard method of measuring the hardness of materials. The smooth surface of the metal is subjected to indentation by a hardened steel ball under pressure. The diameter of the indentation, in the material surface, is then measured by a microscope and the hardness value is read from a chart or determined by a prescribed formula.

Volatile solids

(Environmental Engineering) (VS) is the amount of matter which volatilizes (or burns) when a water sample is heated to 550EC.Volatile suspended solids

island-base kitchen cabinet

ตู้ในครัววางไว้ใต้เคาน์เตอร์ หรือโต๊ะทำงาน ด้านสกัดของตู้เปิดโล่ง

Toxicity

(Environmental Engineering) A U.S. EPA hazardous waste characteristic defined with a rigorous test procedure, the TCLP (for Toxicity Characteristic Leaching Procedure). In the procedure, a waste is extracted for 24 hours with an acetic acid solution. The acid extract is then analyzed for the presence of any of the contaminants listed in the procedure.

Bend Test

(english) Various tests which is used to ascertain the toughness and ductility of a metal product, in which the material is bent around its axis and/ or around an outside radius. A complete test might specify such a bend to be both with and against the direction of grain. For testing, samples should be edge filed to remove burrs and any edgewise cracks resulting from slitting or shearing. If a vice is to be employed, then you must line the jaws with some soft metal, to permit a flow of the metal in the piece being tested.

Pining

(Concrete Engineering) Development of relatively small cavities in a concrete surface, due to phenomena such as cavitation or corrosion.

phenon

กรดคาบอลิค

Adsorption

(Environmental Engineering) A surface phenomena in which a solute (soluble material) concentrates or collects at a surface (the adsorbent).

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