kg /cm2 kg/m2 ft-lb/in. J/m kg-cm/cm ... =654.16 mm2. 1 cm2. =0.1550 in2. 1 yd3. =0.7645 m3. 1 m3. =1.3079 yd3. 1 ft3. =0.0283 m3 ... 衝擊強度. 塑膠單位換算表.
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