dustiness

Heat treated boards display a reduced modulus of rupture and an increase in dustiness.

经过热处理后，板材断裂模数小，而含尘量增加。

Also, as our sun orbits the galactic center it may sweep through areas of interstellar dustiness.

同样，因为太阳位于重力，可能会清除有星际尘埃区域。