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Using numerical simulation technology and method of orthogonal experiment design and single factor rotating optimization, this thesis makes a study of "lost core injection ", thus achieve the optimization of the parameters of molding process, to offer basic reference when developing production technology and mould of the plastics intake manifold. Based on the study of the status in quo and development trend of weight reduction on automobile, the application of plastics to automobile and intake manifold, then under the guidance of theory model and numerical simulation technology in the process of high polymer material, this thesis launches flowing main research work: First of all, on the basis of the three-dimensional model of the part and finite element net model, several designs of gating and running system are numerically simulated and analyzed via MPA of Moldflow.

本文在对当今汽车轻量化、零部件塑料化以及的汽车进气歧管塑料化的发展现状和发展趋势进行了研究和简要介绍，然后在高分子材料成型过程中的理论模型和数值计算方法的指导下，展开主要的研究工作：首先，在零件三维模型和有限元网格模型的基础上，使用Moldflow 的MPA模块对塑料进气歧管的多个浇注系统设计方案进行数值模拟，通过分析各个方案的充填质量、熔接线位置及数量等指标，得到了综合质量较高的4 个进料口的浇口位置及半限制型浇口大小的浇注系统。

The dynamic-link library is created by compiling the C program with the command mex,and then,the data acquisition of hardware is realized by invoking the DLL in MATLAB environment.

用C语言编写用于端口访问的程序，在MATLAB中编译为动态链接库函数，通过调用该动态链接库，可实现对硬件端口的操作。

The process factors are not independent of the gate design, and must be considered in the gate design effort.

工艺因素在浇口设计中不是独立的，而必须考虑浇口的设计效果。

Second, Q: I read about how to parallel port printer to USB port and only connect the PC content.

二，问：我读到过有关如何将并行端口打印机与只有USB端口的PC连接起来的内容。

PCF8574 is a serial bus with SUMBUS parallel transfer of data conversion chip, master-slave communication, and display the data came.

详细说明： PCF8574是带SUMBUS总线的串口转并口的数据转换芯片，主从通讯，并且把数据传出显示。

The scheme implementation of cutting head of protrusive rocks of the Tiaoguan and single sluice control can basically solve the problem of head of protrusive rocks and some dangerous situations.

针对调弦口及调关弯道存在的问题，提出了调关弯道裁弯与双闸控制和调关矶头削矶改造与单闸控制2类治理方案，这2类方案各有优缺点，基本上都能达到调弦口的治理目标。

Risers Risers are designed and placed so as to ensure filling the cavity during solidification.

冒口 冒口的设计及放置等，以确保加油站腔凝固过程。

PA 12 is a good electrical insulator and its properties are not as sensitive to humidity as other polyamides.

因为热流道能够帮助阻止材料过早凝固。如果用潜入式浇口，浇口的最小直径应当是0.75mm。

The lfMRI with SE sequence and/or GR sequences can be used to display the true-false cavities and the endomembranous pieces of aortic dissection.

所有序列对内膜破口和再破口的显示效果不佳，对主动脉主要分支受累情况显示也不满意。

Because of particular rotational motion of Gatling gun barrels, it is difficult to measure the muzzle vibration using fixed acceleration sensor on the barrel tip.

摘 要：转管武器发射时身管处于高速旋转状态，通过炮口安装加速度传感器测量炮口的振动很困难。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐