The surface interval should be spent without exercise.
水面停留间隔期间不应该从事任何运动。
For most earthquakes, Wadati discovered, the interval was quite short near the epicenter; the point on the surface where shaking is strongest.
达清夫发现，对于大多数地震来说，震中附近的时间间隔都很短；震中指的是地表上震动最强烈的地方。
If maximum recoat interval is exceeded, roughen the film surface to ensure the adhesion between layers.
如超过最大重涂间隔，须磨粗表面，以确保漆膜间的附着力。
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