短語(yǔ)詞組短語(yǔ)through -hole precision 通孔精度plated through -hole 電鍍通孔;包括電鍍通孔;不包括電鍍通孔;鍍通孔refueling through -hole 貫通燃料替換Through Wall Hole 通孔Through -hole drill 通孔鉆 返回 through hole