ตัวกรองผลการค้นหา
คลิกที่แต่ละคำเพื่อดูรายละเอียด
(english) The tendency of an object at rest to remain at rest, and of an object in motion to remain in motion.
(english) A cavity which was produced during the solidification of metal by evolved gas, which in failing to escape is held in pockets.
(Environmental Engineering) Water which is contained in lakes, rivers, and oceans.
(english) A change in the shape of an object or material.
(Concrete Engineering) In concrete formwork, the support for the reinforcing steel.
(Software Engineering) tools that help in estimating project cost or effort
(Environmental Engineering) The biological oxidation of ammonia and ammonium sequentially to nitrite and then nitrate. It occurs naturally in surface waters, and can be engineered in wastewater treatment systems. The purpose of nitrification in wastewater treatment systems is a reduction in the oxygen demand resulting from the ammonia.
(Concrete Engineering) The reaction of aggregates, which contain some form of silica or carbonates with sodium oxides or potassium oxides in cement, particularly in warm, moist climates or environments, causing expansion, cracking or popouts in concrete.
(english) Annealing a metal or alloy in a sealed container under conditions that minimize oxidation. In box annealing a ferrous alloy, the charge is usually heated slowly to a temperature below the transformation range, but sometimes above or within it, and is then cooled slowly; this process is also called close annealing or pot annealing.
(english) Method whereby drag may be rammed in the pit or flask without necessity of rolling over. Process used in production of heavy castings.
(english) A mathematical entity having a magnitude and a direction in space.
(Environmental Engineering) The volatile suspended solids concentration in the activated sludge tank.