penetrometers

1.【物】(测量 X 射线穿透力的)透度计

2.【建】贯入度仪,针入度仪

1.an instrument for measuring the penetrating power of electromagnetic radiation, e.g. gamma radiation in contaminated soils

2.an instrument for measuring the penetrability of a solid material by measuring the depth to which it may be pierced with a standard needle