Light curing rapid prototyping system and laser selective sintering rapid prototyping system are two main processing methods. So what are the similarities and differences between the two rapid prototyping designs?

　　1. 两种快速原型技术的相似之处

　　1. Similarities between the two rapid prototyping technologies

　　这两种成形技术的原理非常相似，另外都是作为手板式模具生产不可缺少的技术，在工业设计中也是应用了很多方法。

　　The principles of these two forming technologies are very similar. In addition, they are indispensable technologies for the production of hand-held die, and many methods are applied in industrial design.

　　2. 两种快速原型技术的区别

　　2. Differences between two rapid prototyping technologies

　　3、光固化快速成型系统选区材料粉末材料激光烧结快速成型系统中采用一种液态光敏树脂,形状的光固化快速成型系统的优势是,任何人都能溶解所有粉状材料,可用于制造原型或模型,产生的产品可以作为个样品测试,以及装配零件的结构。所以激光选择烧结的方法可以使用很广泛的材料，如尼龙材料，如PC材料，如其他蜡粉，甚一些硬件材料都可以做。

　　3. The light curing rapid prototyping system uses a kind of liquid photosensitive resin in the selective material powder material laser sintering rapid prototyping system. The advantage of the shape light curing rapid prototyping system is that anyone can dissolve all powder materials, which can be used to manufacture prototypes or models, the products can be used as the first sample test, and the structure of assembly parts. So laser selective sintering method can be used in a wide range of materials, such as nylon materials, such as PC materials, such as other wax powder, and even some hardware materials.

　　加工的产品通过以上方法,精度相对较大的差异,但可以烧结选区激光烧结,很多材料,甚一些不受欢迎的陶瓷层,所以更选区激光烧结过程具有广泛的适用性、大范围的应用行业,吸引力强,这些特点也可以掩盖他的准确性不高的缺点,和表面粗糙度,效率低下的问题。因为大多数客户了解这些属性，所以可以在挑选自己产品的过程中进行参考。

　　Through the above methods, the accuracy of processed products is relatively different, but selective laser sintering, many materials, even some unpopular ceramic layers can be sintered, so the selective laser sintering process has a wide range of applicability, wide range of application industries, strong attraction, these characteristics can also cover up the shortcomings of its low accuracy, surface roughness, and low efficiency. Because most customers understand these attributes, they can refer to them in the process of selecting their own products.

　　一般工艺，对产品精度要求高，表面光洁度要求高，适合于光固化成型快速成型，如果对一般大型产品，粗度要求高，产品相对低廉，则选择光固化成型激光粉末烧结成型。

　　The general process requires high precision and surface finish of the product, which is suitable for the rapid prototyping of light curing. If the requirement of coarseness is high and the price of the product is relatively low for the general large-scale product, the laser powder sintering of light curing molding is selected.

　　SLA的优势

　　Advantages of SLA

　　1. 光固化成形法是一种较早出现的快速原型制造工艺，具有较高的成熟度和时间测试性。

　　1. UV curing is an earlier rapid prototyping manufacturing process with high maturity and time testability.

　　2. 样机直接采用CAD数字模型制作，加工速度快，生产周期短，无需刀具和模具。

　　2. The prototype is directly made of CAD digital model, with fast processing speed and short production cycle, without cutting tools and dies.

　　3.它可以加工结构复杂或传统方法难以成形的原型和模具。

　　3. It can process prototypes and dies with complex structure or difficult to be formed by traditional methods.

　　4. 使CAD数字模型直观，降低错误修复成本。

　　4. Make the CAD digital model intuitive and reduce the cost of error repair.

　　5. 为实验提供了样本，对计算机仿真结果进行了验证和校核。

　　5. Provide samples for the experiment, verify and verify the computer simulation results.

　　6. 可在线操作，远程控制，便于生产自动化。

　　6. It can be operated online and controlled remotely, which is convenient for production automation.

　　SLA的缺陷

　　Defects of SLA

　　1. SLA系统成本高，使用维护成本高。

　　1. SLA system has high cost and high maintenance cost.

　　2. SLA系统是一种复杂的液体操作设备，需要恶劣的工作环境。

　　2. SLA system is a kind of complex liquid operation equipment, which needs a bad working environment.

　　3.塑件多为树脂，强度、刚度、耐热性有限，不利于长期保存。

　　3. Plastic parts are mostly resin, with limited strength, rigidity and heat resistance, which is not conducive to long-term preservation.

　　4. 预处理软件和驱动软件计算量大，与处理效果相关性高。

　　4. The pre-processing software and driver software have a large amount of calculation and high correlation with the processing effect.

　　5. 软件系统复杂，难于上手，文件格式也不为大多数设计人员所熟悉。

　　5. The software system is complex and hard to use, and the file format is not familiar to most designers.

　　6. 立体固化技术由一家公司垄断。

　　6. Stereoscopic curing technology is monopolized by one company.

　　二语习得的发展趋势与展望

　　The development trend and Prospect of second language acquisition

　　立体固化的发展趋势是高速、、、微型化。

　　The development trend of solid curing is high speed, energy saving, environmental protection and miniaturization.