1.The final yarn structures in composites have changed comparing with those in the preforms after which are impregnated with matrix and consolidated into the final shape.

與預(yù)制件相比，復(fù)合材料內(nèi)部的紗線結(jié)構(gòu)發(fā)生了變化，這種變化也體現(xiàn)在纖維體積分?jǐn)?shù)以及其它結(jié)構(gòu)參數(shù)上。

2.The series could handle 1-litre mineral water bottle preforms from 16 to 48 cavities.

該系列可處理一公升的礦泉水瓶瓶坯，從16日至48溶洞。

3.This paper introduces the fabrication technology for knitted preforms. In-plane and out-of-plane Mechanical properties are studied which are compared with those of woven composites.

本文介紹了針織復(fù)合材料預(yù)型件的制造工藝：研究其面內(nèi)和面外力學(xué)性能：并與機(jī)織復(fù)合材料進(jìn)行了比較。

4.The results indicated that by HIPing porosities in the preforms can be closed and the densities can be increased, then the strength and ductility can be improved.

結(jié)果表明，熱等靜壓處理可以閉合坯件內(nèi)的疏松孔洞，提高合金致密度，進(jìn)而提高合金的強(qiáng)度和塑性。

5.The production of three dimentional spherical reinforced preforms by means of one-side-sewing technology is presented.

介紹了通過(guò)單面縫紉技術(shù)生產(chǎn)三維球面增強(qiáng)預(yù)型件的方法。

6.In this paper, densification laws of rotary forging powder sintered preforms and the property of components have been investigated with orthogonal experiment method.

本文利用正交實(shí)驗(yàn)等方法在自行設(shè)計(jì)的實(shí)驗(yàn)裝置上對(duì)粉末燒結(jié)體的擺輾致密規(guī)律及壓實(shí)體的性能進(jìn)行了研究。

7.Injection moulding of bottle CAPS is distinctly different from that of preforms in that it is thin-wall moulding.

與瓶坯注塑截然不同，瓶蓋的注塑是薄壁注塑。

8.On the simultaneity, the actual shape of the yarns in performs was observed, which will be beneficial to the foundation of the cell modal in preforms.

同時(shí)，通過(guò)實(shí)驗(yàn)觀察了預(yù)成型件中紗線的實(shí)際形態(tài)，為三維六向編織預(yù)成型件單胞模型的建立奠定了一定的基礎(chǔ)。

9.Some problems of design for powder hot forging die have been discussed around the characteristics of forging deformation of powder preforms.

圍繞粉未燒結(jié)體鍛造變形的特點(diǎn)，討論了粉末鍛造模具設(shè)計(jì)的若干問(wèn)題，并對(duì)一些粉末鍛造模具進(jìn)行了分析。