Traditionally, robots have been very hard, made of metal and other rigid material.
传统上，机器人很硬，由金属和其他刚性材料制成。
"Origami engineers" build a variety of objects by folding sheets of rigid material along set creases.
“折纸工程师”通过沿着固定的折痕折叠刚性材料薄片来构建各种各样的物体。
In the highway construction of our country at present, the semi-rigid material is widely used for its high intensity, low cost, and being wide of the raw material source.
目前我国高等级公路建设中，半刚性材料以其强度高，造价低廉，原材料来源广等优点，被广泛用作路面基层。
It is mainly used for transparent film and flake, imitation leather, cable granule, rigid material, etc.
它主要用于透明薄膜、薄片、人造革、电缆颗粒、硬质材料等。
One is to plant arbor tress with huge crown to shade the square while the square is mainly paved with rigid material.
一种是种植树冠巨大的乔木为广场遮荫，广场上以硬质铺装为主。
The results show that rigid material has a better effect than flexible one in isolating vibration, so the former should be selected as barrier material in engineering.
研究表明，刚性材料比柔性材料具有更好的隔振效果，在隔振设计时应选择刚性屏障材料；
The results show that rigid material has a better effect than flexible one in isolating vibration, so the former should be selected as barrier material in engineering.
研究表明，刚性材料比柔性材料具有更好的隔振效果，在隔振设计时应选择刚性屏障材料；
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