介绍织物具有平面对称性组织的设计方法，包括旋转、平移、反射和滑动反射等对称的设计。
Proposee the design scheme of fabric symmetrical weaves, including methods of rotation, translation, reflection and sliding reflection etc.
由此推测，主震的错动面为北西西走向，可能是高倾角的左旋平移断层的滑动结果。
From this, it has been inferred that the strike of the dislocating fault plane of the main shock is NWW. It seems to be a left lateral horizontal slip fault with high dipping Angle.
滑动框(3)套在台座(2)两顶端上，可在驱动器(6)的作用下沿台座(2)来回水平移动。
The sliding frame (3) is sheathed on both top ends of the table seat (2), and backwards, forwards and horizontally moved along the table seat (2) under the function of the driver (6).
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