A coupling dynamics FEM model of guardrail and vehicle crashing system is built in this paper in accordance with the W-beam semi-rigid guardrail used widely in express way.

针对高速公路广泛使用的波形梁半刚性护栏建立“护栏—汽车”碰撞体系耦合动力学有限元模型，研究护栏立柱对汽车绊阻效应的形成过程，提出解除护栏立柱对汽车绊阻效应的一种有效方法。

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His bold and colorful semi-abstract mixed media paintings express the power of the human spirit.

那些大胆的笔触、多彩的形象和半抽象混合媒介的运用，无不彰显着人类精神中的力量元素。

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What began as a semi-improvised piano piece has grown into a full symphonic work, giving McPartland a vehicle with which to fully express her appreciation for Carson's vision, as well as their shared concern for the destiny of the natural world.

NPR: Marian McPartland's 'Rachel Carson' In Concert