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preform

美英 [priː'fɔːm]

n.初步加工的成品；压片；雏形；(录音用)盘料
v.预先形成[决定]；把…初步加工
网络预成型；预型体；预成形

过去分词：preformed 现在分词：preforming 第三人称单数：preforms

preform

英-汉英-英网络释义

preform

预成型

　　一个方法是预成型(preform)的使用，锡球以所希望的排列/间格矩阵嵌入水溶性的助焊剂介质中。一个预成型大约US$10，这个 …

预型体

由於日本光纤预型体(Preform)(大陆称为光纤预制棒)减产，进而造成原材料供应紧张，预计光纤产品的价格将上涨，大陆相关企 …

预成形

预成形（Preform）异物检查透过转动工件，进行成型前之预形口部、瓶身的外观检查。

预制品

bga封装是什么意思 - 工艺综述 - 电子发烧友网 ... 49、Power Supply 电源供应器 50、Preform 预制品 51、 Purple Plague 紫疫 ...

预成型坯

风暴 - 歪酷博客 Ycool Blog ... prefinishing stand 预精轧机座 preform 预成型坯 preforming 预成型 ...

预成型体

它是把增强材料切成或制成预成型体（Preform），放入模腔之中。预成型体放置于合适的位置，以保证模具的密封。

例句：

The preform is formed by an upper neck which maintains unchanged its form in the final object and a hollow body, joined to the neck .

预型件成形为具有保持其形状在成品中不变的上颈部和连接到该颈部的中空体。

The preform growth during the stretching and blowing was captured through a transparent mold and used to verify the simulation results .

研制了全透明拉伸吹塑模具，通过可视化实验对模拟结果进行验证。

A holey fiber can be produced by drawing the holey porous preform, after having submitted it to a consolidation process .

可通过将多孔疏松预制棒送入固结工序之后拉丝该多孔疏松预制棒而制造多孔光纤。

With more than 20 years of experience in packaging system production , SIPA increases today the preform production range PPS.

拥有在包装系统生产方面 20余年的经验，西帕今天又增加了瓶坯生产系列 PPS 。

The silica bar may be a supporting silica bar of a glass working lathe support for overhanding the primary preform .

二氧化硅棒可以是用于将给初始预型体涂上包层的玻璃制品加工车床支架的支撑二氧化硅棒。

Depending on your application , the preform flux may be included internally or externally .

根据用户的应用情况，预成型件焊剂可以内置或外加。

The surface of the 3D knitted preform was researched systematically in this article .

对四步法三维编织预制件表面外观进行了分类研究。

The effects of infiltration pressure , casting temperature and preform particles temperature on the preparation process were analyzed.

研究了渗流驱动压力、铝熔体浇铸温度及模具预热温度对渗流过程的影响；

Two methods used to liquid impregnate carbon fiber preform are introduced .

介绍了液相浸渍炭纤维坯体的两种方法。

This preform is then heated to a temperature just below the melting point of the alloy .

此时，将初步加工的成品加热到一定的温度，这个温度要刚刚低于合金的熔点。

A beaded preform includes a plurality of adjacently positioned beads for forming a plurality of voids in an engineered material .

一种带珠的预制坯包括用于在工程材料中形成多个孔隙的多个相邻定位的珠。

New models were added while keeping the well known features of high performance and flexibility of SIPA PPS preform injection systems .

新的型号继承了西帕 PPS 瓶坯注塑系统一贯的高性能和高灵活性的特点。

The fabricating process of preform and factors having effect on it were also studied systematically .

系统地研究了预制块的制备工艺过程及影响因素。

By introducing TASER to all front line Officers will enable them to preform their duties more effectively .

通过装备前线静园将会使得他们更有效的执行他们的任务。

Preform room is separately from other working rooms. Keep the suitable temperature and enough air condition. F.

粗加工间与其它操作间隔离，各操作间温度适宜，冷气供应充足；

Knowledge on plastic material and quality control on preform manufacturing.

具备塑料和瓶胚生产品控的知识。

The invention is an integrally blow-moulded bag-in-container (2 ) obtainable by blow-moulding an injection moulded multi-layer preform (1 ).

本发明是一种可通过对注射成形的多层预制坯（1 ）进行吹塑来获得的一体吹塑内装袋容器（2 ）。

The core rod section with the deposited soot overcladding is consolidated to obtain a finished optical fiber preform .

芯棒段和沉积灰渣外包层被固结以形成制成的光纤预制件。

They are drawn from a much larger "preform" block of material , in much the same way that conventional optical fibres are created .

它们从大块的材料上分离出来，其方法和传统的光学纤维提取差不多。

The disadvantages of injection stretch blow moulding is difficult to add hanDle and expensive preform mould , which has a long delivery time .

注拉吹的缺点是不易加手柄，注塑模具昂贵，而且交货期长。

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