hardboards

与hardboards相关的网络例句 [注：此内容来源于网络，仅供参考]

This test method is not intended for use in testing corrugated boxboard, liner board, or hardboards that tend to cut the thin rubber diaphragm.

这个试验方法不用于试验割成薄的橡胶横隔膜的瓦楞盒纸板，垫板或硬纸板。