When not in use for an emergency, message boards display the time and date.
当没有紧急信息发布时,留言板会显示当前的日期和时间。
Heat treated boards display a reduced modulus of rupture and an increase in dustiness.
经过热处理后,板材的断裂模数变小,而含尘量增加。
Others use the boards as testbeds for improved display hardware, new "chalk" and interactive software.
其他人将板子作为改善了显示硬件、新“粉笔”和交互式软件的测试床来使用。
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