ตัวกรองผลการค้นหา
chemical formula
แปลว่าสูตรเคมี
chemicals
แปลว่าวัตถุเคมี
Biochemical oxygen demand (BOD)
แปลว่า(Environmental Engineering) The amount of oxygen required to oxidize any organic matter present in a water during a specified period of time, usually 5 days. It is an indirect measure of the amount of organic matter present in a water.
Cellular Concrete
แปลว่า(Concrete Engineering) A lightweight product consisting of portland cement, cement-pozzolan, cement sand, lime-pozzolan, or lime-sand pastes, or pastes containing blends of these ingredients and having a homogenous void or cell structure, attained with gas forming chemicals or foaming agents. For cellular concretes, containing binder ingredients other than or in addition to portland cement, autoclave curing is usually employed.
chemical change
แปลว่า(เคมีแค็ล เชนจ์) การเปลี่ยนแปลงทางเคมี
Biogeochemical cycle
แปลว่า(Environmental Engineering) The cycle of elements through the biotic and abiotic environment.
Carbonaceous biochemical oxygen demand (CBOD)
แปลว่า(Environmental Engineering) The amount of oxygen required to oxidize any carbon containing matter present in a water.
Bismuth
แปลว่า(english) Chemical symbol Bi. A soft, course cystalline heavy metal with a silvery white color and pinkish tinge; usually produced as a by-product of copper,leaad and other metals. Has a thermal conductivity lower than all other metals except mercury. Used as alloying agent but leading use is in pharmaceuticals.
Blow Down
แปลว่า(english) Process that rids boiler feed water of solids and maintains the proper chemical balance of the feed water. Blow down can also be used to rid drum(s) of excess water.
Bright Dipping
แปลว่า(english) Chemical polishing of aluminum, often by treatment with a mixture of nitric acid and phosphoric acid, yielding a mirror-shiny (specular) highly reflective surface. It is almost always followed by anodizing to protect the surface and provide some choice of color.
Synergism is the act of working together
แปลว่า(Environmental Engineering) Two chemicals which are synergistic have a greater effect together than the sum of their individual effects. The effect can be either positive or negative.
Adsorption Water
แปลว่า(Concrete Engineering) Water held on surfaces in a material by either physical and/or chemical forces.