ผลการค้นหา

rapid-hardening cement

แปลว่าปูนซีเมนต์แข็งตัวเร็ว

flow, rapidly varied

แปลว่าการไหลแบบเปลี่ยนแปลงอย่างรวดเร็ว : การไหลซึ่งมีความลึกของการไหลเปลี่ยนแปลงทันทีทันใดตามความยาวของทางน้ำ

rapid setting

แปลว่าก่อตัวเร็ว, แข็วตัวเร็ว

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. "

rapid flow

แปลว่าความเร็วของกระแสน้ำที่ไหลเร็วกว่าความเร็ววิกฤต (critical flow)

rapid-train

แปลว่าขบวนรถไฟเร็ว (ช้ากว่ารถด่วน)

rapid-firing

แปลว่าปืนยิงเร็ว

rapids

แปลว่าที่ๆ น้ำไหลเชี่ยวจัดในแม่น้ำ

rapid sand filter

แปลว่าเครื่องกรองแบบเร็วด้วยทราย

rapid transit

แปลว่าขนส่งมวลชน

Age Hardening

แปลว่า(english) Hardening by aging, usually after rapid cooling or cold working. The term as applied to soft, or low carbon steels, relates to a wide variety of commercially important, slow, gradual changes that take place in properties of steels after the final treatment. These changes, which bring about a condition of increased hardness, elastic limit, and tensile strength with a consequent loss in ductility, occur during the period in which the steel is at normal temperatures.

Aging 2

แปลว่า(english) A change in properties that occurs at ambient or moderately elevated temperatures after hot working or a heat treating operation (quench aging in ferrous alloys), or after a cold working operation (strain aging). The change in properties is often, but not always, due to a phase change (precipitation), but does not involve a change in chemical composition. In a metal or alloy, a change in properties that generally occurs slowly at room temperature and more rapidly at higher temperatures.