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APS's Drilling Dynamics Monitor (DDM?)* measures and records weight on bit, torque on bit, bending on bit, internal and annular pressure and temperature. APS鑽井動態監測短節（DDM）測量和記錄鑽頭処的鑽壓、扭矩、彎矩、鑽具內和環空的壓力和溫度。