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ค้นเจอ 125 รายการ

Bronze 2

(english) Primarily an alloy of copper and tin, but additionally, the name is used when referring to other alloys not containing tin, for example, aluminum bronze, manganese bronze, and beryllium bronze.

Vibration

(Concrete Engineering) Energetic agitation of concrete to assist in its consolidation, produced by mechanical oscillating devices at moderately high frequencies. (A.) External vibration employs a device attached to the forms and is particularly applicable to the manufacture of precast items and for the vibration of tunnel lining forms. (B.) Internal vibration employs an element which can be inserted into the concrete; and is more generally used for cast-in-place construction.

Bimetal

(english) Casting, usually centrifugal, made of two different metals, fused together.

Zircon

(english) The mineral zircon silicate, ZrSiO4, a very high melting point acid refractory material used as a molding material in steel foundries.

Bloomery

(english) A primitive furnace used for direct reduction of ore to iron.

Bismuth

(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.

Brown Sharp Gages

(english) A standard series of sizes refered to by numbers, in which the diameter of wire or thickness of sheet metal is generally produced and which is used in the manufacture of brass, bronze, copper, copper-base alloys and aluminum. These gage numbers have a definite relationship to each other. In this system, the decimal thickness is reduced by 50% every six gage numbers- while temper is expressed by the number of B&S gage numbers as cold reduced in thickness from previous annealing. For each B&S gage number in thickness reduction, where is assigned a hardness value of 1/4 hard.

Belly Roll

(english) Roll used on the line to steady plate.

Wastewater

(Environmental Engineering) Consumed or used water from a municipality or industry that contains dissolved and/or suspended matter.

Bottom Roll

(english) Submerged roll in the pot used to keep the strip submerged in the pot.

housed joint

(ช่างไม้) หัวต่อครอบ การเข้าไม้ชนิดที่ไม่ต้องบากเดือย คือช่องรัดเดือย จะรับหัวไม้ได้หมดด้าน กล่าวง่าย ๆ คือเจาะร่องเต็มขนาดของหัวไม้ที่เป็นเดือย

Blow Down

(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.

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