加法制造的过程中需要的原材料更少，因为3d印制机制由软件驱动，它可以制作所需的不同部件，而不用对每个不同部件进行耗材耗时的更换机械设备。
The additive process requires less raw material and, because software drives 3d printers, each item can be made differently without costly retooling.
正如以上所提到的，将不同的元素通过加法和减法的方式，慢慢地组合到一起是一个需要不断反复的过程。
As mentioned above, it was a very iterative process where all of the element were slowly built up together through additive and subtraction means.
在精确重建滤波过程中，需要计算投影数据的雷当变换，本文采用普通累加法和辛普森直线积分法来完成对象素网格的采样。
The Radon transform of the projection is calculated in the filtered process of exact reconstruction, Siddon and Simpson integral are used to sample the pixels to get the projection.
本文在大量实验的基础上，提出了叠加法定量过程中应注意的一些问题。
Based on enough experiments, this paper points out some problems dealing with addition method.
单体两段滴加法中，当预加单体量小于30%时，聚合过程稳定，氨化剪切后超微胶乳透光率约65%；
When the pre-adding fraction of monomer was less than 30%, the polymerization could be carried out stably and a final micro-latex with 65% transparency was obtained.
文中首先介绍了内建自测试的实现原理，在此基础上以八位行波进位加法器为例，详细介绍了组合电路内建自测试的设计过程。
The BIST of the principle of achieving is introduced first in this paper, then take the 8-bit ripple carry adder as an example, describes the design process of BIST.
相对于行列分解法，该算法节省了约一半的乘法次数，省略了数据的转置存储过程，而加法的运算复杂度基本维持不变。
Compared to Roll and Column Method (RCM), this new fast algorithm reduces half of multiplication times, eliminates transposition of data, and retains computational complexity of addition.
目前对此虽然已经有较多研究成果发表，但多数以简支桥梁为研究对象，采用效率不高的数值方法或者解析方法求解随机响应，分析过程中普遍采用模态叠加法。
Some research papers have been published. However, most of these papers used relatively simple bridge models and adopted analytical solution or inefficient numerical method to get stochastic response.
目前对此虽然已经有较多研究成果发表，但多数以简支桥梁为研究对象，采用效率不高的数值方法或者解析方法求解随机响应，分析过程中普遍采用模态叠加法。
Some research papers have been published. However, most of these papers used relatively simple bridge models and adopted analytical solution or inefficient numerical method to get stochastic response.
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