只有柚木才能达到橡木的膨胀系数,并保持水密性。
Thermal deformation temperature and liner expansion coefficient of the composite were decreased.该复合材料的热变形温度有所降低,但线膨胀系数减小。
During the study we tried to lower the thermal expansion coefficient of cordierite by adding additives.在本研究中,还试图通过添加外加剂来降低堇青石的热膨胀系数。