它们用快速开闭气孔的方式来发出这些声音。
They make these sounds by rapidly opening and closing their blowhole.
高温烧结时，一方面，熔化的玻璃相被封闭气孔中的气体穿过形成贯穿大孔洞，削弱高温烧结时的力学性能；
In high temperature sintering , on the one hand, big across hole is formed by gas closed in porosity that passes through molten glass phase, and mechanical properties is declined.
样品内部均匀分布了大量的开口气孔和闭口气孔，样品均匀分布的闭气孔不仅降低了样品的吸水率，而且增加了样品的抗冻融性。
There are evenly distributed open pores and closed pores Inside sample, evenly distributed closed pores not only reduce the Wa, but also increase the resistance to freezing and thawing.
应用推荐