By using the so called masscondensation technique, the number of the degrees of freedom in dynamic analysis is reduced greatly.
用质量凝聚技巧，使动力分析的自由度数目大为减少。
2
In addition, the calculation results between the lumped mass method and the method of the condensation of degree of freedom have been compared.
此外，本文还对堆聚质量法和自由度凝聚法计算的结果进行了比较。
3
The volatile organic compounds (VOCs) produced in the laser-sculpture process of bicolor board were studied using cold trap condensation-gas chromatography-mass spectrometry.