求英语大神帮忙把下面的英语翻译成中文~急~谢谢了

Due to the casting method and use of alloy is different, the casting properties vary enormously. The most important may be mechanical properties. The same metal, casting performance than forging performance to poor, especially under the room temperature strength and ductility have significant difference. But reasonable design can overcome the inherent defect. Cast metal is easy to appear the space, thus reduce the ductility of metal. Some of the void is in metal solidification of gas evolution and involved in the process. Gas involved in the die casting appeared in another problem. In vacuum environment melting metal and injection emptying gas mold, can improve the casting metal performance and reduce the impurity content. These technologies to improve the assembly and service performance, and application to high quality alloy steel and other important alloy manufacturing. Metal solidification shrinkage process also can produce space, this kind of gap in nature both macroscopic also have microscopic. Due to form a sharp Angle type, than foaming produce circular gap cause greater stress. Metal cooling into solid state after further contraction and casting geometric structure caused by the cooling speed difference, will produce the shrinkage stress, leading to cooling crack. The reasonable design and inspection can avoid this kind of structure defects. In the process of casting residual stress is not enough to be directly cause fracture, but if the external bear small load, will take place fracture. The residual stress can and should be avoided by annealing. Metal ductility also will be affected by the influence of the shape and texture direction. Solidification shrinkage produce space and low melting point melting caused by brittle impurity in grain boundary concentration appear, in the casting process leads to the metal surface of embrittlement and weakening, as shown in figure 11.2 shows.
由于铸造方法和合金的使用不同，铸造性能相差很大。最重要的可能是机械性能。相同的金属，铸造性能比锻造性能差，尤其是在室温强度和韧性有显著差异。而合理的设计可以克服的固有缺陷。铸造金属容易出现空间，从而减少延展性金属。一些空白在金属凝固过程中涉及的演变和。气体参与压铸出现在另一个问题。在真空环境下熔化金属和排空气体注射模具，可以改善铸造性能和降低杂质含量。这些技术提高装配和使用性能，并应用到优质合金钢和其他合金制造。金属凝固收缩过程也会产生空间，这种差距的性质也有微观宏观。由于形成一个锐利的角式，比发泡产生圆形缺口造成更大的压力。金属冷却成固体状态后，进一步收缩和铸造几何结构所造成的冷却速度的不同，会产生收缩应力，导致冷裂纹。合理的设计和检查可避免这种结构缺陷。在这个过程中的铸造残余应力不足以直接导致骨折，但如果外部承受载荷小，就会发生断裂。残余应力是可以而且应该避免退火。金属塑性也会受到影响的形状和纹理方向。凝固收缩产生的空间和低熔点熔化造成的脆性杂质在晶界浓度出现，在铸造过程中导致金属表面脆化和弱化，如图11.2所示显示。
亲，请把那英语抄下来，本人继续翻译

由于铸造方法和使用的合金不同，铸造性能差异极大。最重要的可能就是机械特性。同样的金属，铸造性能比锻造性能要差，尤其室温下的强度和延展性差异明显。但是合理的设计能够克服这些固有缺点。铸造金属容易出现空隙，由此降低金属的延展性。有些空隙是在金属凝固时的气体逸出和卷入过程中形成的。气体卷入是模具铸造中出现的另一个问题。在真空环境下熔炼金属并注入排空气体的模具中，能提高铸造金属的性能和减少杂质含量。这些技术提高了装配和服务性能，并应用到优质合金钢和其它重要合金的制造。金属凝固收缩过程中也会产生空隙，这类空隙在性质上既有宏观也有微观的。由于形态呈尖角型，比起泡产生的圆形空隙造成更大的应力。金属冷却成固态后进一步收缩和铸造几何构造引起的冷却速度差异，将产生收缩应力，导致冷却裂纹。合理设计和检验能避免这类结构缺陷。铸造过程中的残留应力还不足以直接造成断裂，但是如果外部承受小的载荷，就会发生断裂。这种残留应力可以而且应该通过退火加以消除。金属延展性还会受到纹理形状和方向的影响。凝固收缩产生的空隙和低熔点熔炼造成的脆化杂质多在纹理交界处集中出现，在铸造过程中导致金属表面的脆化和弱化，如图11.2所示。

Due to the casting method and use of alloy is different, the casting properties vary enormously. The most important may be mechanical properties. The same metal, casting performance than forging performance to poor, especially under the room temperature strength and ductility have significant difference. But reasonable design can overcome the inherent defect. Cast metal is easy to appear the space, thus reduce the ductility of metal. Some of the void is in metal solidification of gas evolution and involved in the process. Gas involved in the die casting appeared in another problem. In vacuum environment melting metal and injection emptying gas mold, can improve the casting metal performance and reduce the impurity content. These technologies to improve the assembly and service performance, and application to high quality alloy steel and other important alloy manufacturing. Metal solidification shrinkage process also can produce space, this kind of gap in nature both macroscopic also have microscopic. Due to form a sharp Angle type, than foaming produce circular gap cause greater stress. Metal cooling into solid state after further contraction and casting geometric structure caused by the cooling speed difference, will produce the shrinkage stress, leading to cooling crack. The reasonable design and inspection can avoid this kind of structure defects. In the process of casting residual stress is not enough to be directly cause fracture, but if the external bear small load, will take place fracture. The residual stress can and should be avoided by annealing. Metal ductility also will be affected by the influence of the shape and texture direction. Solidification shrinkage produce space and low melting point melting caused by brittle impurity in grain boundary concentration appear, in the casting process leads to the metal surface of embrittlement and weakening, as shown in figure 11.2 shows.
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