单词	jack arch
释义	Jack arch an arch of the thickness of one brick. See also: Jack jack arch flat arch flat arch An arch whose soffit (i.e., lower face) is horizontal. Also called a Dutch arch, French arch, jack arch, or straight arch. ThesaurusSeeflat arch
随便看	direct material input direct material margin direct material price variance direct material productivity direct materials direct materials sourcing direct matrix abstraction program direct matrix architecture direct matrix inversion direct measurement explorer direct measurement of blood pressure direct measurements, inc. direct measure of quality direct measuring regulator direct mechanical left ventricular assist device direct mechanical ventricular assistance direct media access direct media connections direct media exchange direct media interface direct media marketing direct medical control direct memory access direct memory access control direct memory access controller

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