Graduation and test methods of air permeability and water penetration for building external doors
As one kind of high-resolution near-surface geophysical technology,ground-penetration radar is suitable for archaeological prospection,where the target is shallow,small and similar with its surrounding materials.
Point of penetration; Breakthrough point
The visual information included by a physical image is the physical basis of an image of the personality, however, the penetration and influence of an image mainly lies in its ethics, instead of its physical features, and lies in its ethical elements and psychological reasoning.
If Top Hat and Fedora were phony, what of the leads they gave to penetration of British security?
minimum penetration altitude
Using furan sand to produce heavy diesel engine block and crankshaft eliminated defects of castings including “penetration/burn-in”,“shrinkage porosity”,“big dimension deviation” of cylinder block,“penetration/bum-in”,“misrun”and“run-out”of crankshaft,and so on.
