N-Mastics -A non-skinning polybutene rubber based mastic that remains permanently soft and paste-like. Prevents moisture ingress in cool room panels.是什么意思_N-Mastics -A non-skinning polybutene rubber based mastic that remains permanently soft and paste-like. Prevents moisture ingress in cool room panels.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句