求翻译：盾的用途是将杀伤力加以消耗或偏导，以及作为助攻武器。由于重量问题，历代盾牌都以藤、木或皮盾为主，由于木、皮盾表面需要涂漆以防潮腐，便连带产生了精美的盾面图案。西汉以前盾的样式都接近长方形，分为步用和车用，步盾长大利于防箭和维持阵列，车盾短窄利于车上使用。防护最大的威胁是刺，刺的力量足以在攻击点上聚集起高达数百公斤的压力，是刀剑劈砍无法企及的。因此时至战国，用于近战的双弧形方盾就盛行起来，纵中线凸起的形状，有利于分解刺的力量。是什么意思？

Shield's purpose is to be consumed or partial derivatives of mass destruction, as well as assists weapons. As the weight issue, ancient shield are rattan, wood or leather shield, mainly due to wood, leather shield to surface moisture rot need painting, they produced a fine shield associated surface

Dun is the use or consumption will be injurious to import weapons, as well as a game. Through the ages, weight problems are due to shield rattan, wood or leather shield, due mainly to wood, leather shield surface paint to moisture, corruption will spin-oriented The exquisite shield designs. West Ham

The shield use is consumes the lethality or leads, as well as as secondary attack weapon.As a result of weight question, all previous dynasties shield all by cane, wood or skin shield primarily, because the wood, the skin shield surface needs to paint moisture-proof by spoiled, then the association

Shield be consumed is the purpose of destruction or partial derivative, and as a weapon of assists. Due to weight problems, past shields are mainly by rattan and wooden or leather shields, due to the wood, Pi Dun need paint surface moisture rot, it had a fine joint of shield patterns. Before the Wes

Shield's purpose is to be consumed or partial derivatives of mass destruction, as well as assists weapons. As the weight issue, ancient shield are rattan, wood or leather shield, mainly due to wood, leather shield to surface moisture rot need painting, they produced a fine shield associated surface