ผลการค้นหา

ค้นเจอ 25 รายการ

หรือคุณกำลังค้นหา standard

Secondary standards

(Environmental Engineering) Recommended drinking water quality standards which relate to aesthetics and/or health. These standards are recommended, not required. See primary standards.

Receiving water quality standards

(Environmental Engineering) Standards which require a discharger to maintain a certain quality level in the receiving water.

Primary standards

(Environmental Engineering) Required drinking water quality standards related directly to human health. These standards are required and enforceable by the U.S. EPA. See secondary standards.

Effluent based standards

(Environmental Engineering) Standards which set concentration or mass per time limits on the effluent being discharged to a receiving water.

manganin

(โลหะ) โลหะผสมทองแดง, นิเกิ้ล และเฟอโรแมงกานิช ใช้มากในการผลิต standard resistance coils

Brinell Hardness Test

(english) A common standard method of measuring the hardness of materials. The smooth surface of the metal is subjected to indentation by a hardened steel ball under pressure. The diameter of the indentation, in the material surface, is then measured by a microscope and the hardness value is read from a chart or determined by a prescribed formula.

standard time

เวลาตามมาตรฐานของท้องถิ่น

Bastard

(english) Threads,parts,tools and sizes that are not standard, such as, “Bastard Nuts”, “Bastard Plus”, “bastaard fittings and so forth. The term also refers to a standard coarse cut file.

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.

standard

มาตรฐาน

Standard Wire Gauge

มาตรฐานของขนาดสายไฟที่กำหนดใช้ทั่วๆ ไฟ

AFS Tests

(english) A number of standard tests determined by American Foundrymen's Society to evaluate molding and core sands.

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