ตัวกรองผลการค้นหา
chief chemical engineer
แปลว่าวิศวกรเคมี
chemical
แปลว่าทางเคมี
chemical engineer
CFCs
แปลว่า(Environmental Engineering) Chlorofluorocarbons, chemicals which result in a depletion of the ozone layer in the upper atmosphere.
chemical weapon
แปลว่าอาวุธเคมี
chemicals
แปลว่าสารเคมี
chemical fertilizer
แปลว่าปุ๋ยเคมี
แปลว่าวัตถุเคมี
chemical change
แปลว่า(เคมีแค็ล เชนจ์) การเปลี่ยนแปลงทางเคมี
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.
Basic Oxygen Furnace (BOF)
แปลว่า(english) "WHAT A pear-shaped furnace, lined with refractory bricks, that refines molten iron from the blast furnace and scrap into steel. Up to 30% of the charge into the BOF can be scrap, with hot metal accounting for the rest. WHY BOFs, which can refine a heat (batch) of steel in less than 45 minutes, replaced open-hearth furnaces in the 1950s; the latter required five to six hours to process the metal. The BOF's rapid operation, lower cost and ease of control give it a distinct advantage over previous methods. HOW Scrap is dumped into the furnace vessel, followed by the hot metal from the blast furnace. A lance is lowered from above, through which blows a high-pressure stream of oxygen to cause chemical reactions that separate impurities as fumes or slag. Once refined, the liquid steel and slag are poured into separate containers. "
