词汇	deep hole drill
释义	deep hole drill 深孔钻头
随便看	static penetration static penetration resistance static penetration test static P/E ratio static perfect fluid sphere static performance static performance model static performances Static performance validation Static performanee static perfusion scintigram static perimeter static perimetry static period static permeability static permittivity static perspective static phase static phase advancer static phase-advancer static phase comparator static phase error static phase error measurement static phase generator static phase-shift circuit