preforms

v.

预先形成( preform的第三人称单数 )；

1. The superior preform of composites is a basic requirement and one of key factors for fabricating superior properties composites.
   摘要高质量复合材料预制块是获得高性能复合材料的基本要求和关键要素之一。
2. An algorithm of three-dimensional braided composite material preform image proce ssing based on mathematics morphology is presented.
   提出一种基于小尺度的数学形态学的三维编织复合材料预制件图像的边缘检测方法。

Preforms and optical fibers coated in alumina and/or silica
Sol-gel-based optical preforms and methods of manufacture
OPTICAL PREFORMS FOR SOLID STATE LIGHT EMITTING DICE, AND METHODS AND SYSTEMS FOR FABRICATING AND ASSEMBLING SAME
RETRACTED: On the microstructure of three-dimensional braided preforms
Carbon composites based on multiaxial multiply stitched preforms. Part 1. Geometry of the preform
Carbon composites based on multiaxial multiply stitched preforms: finite element modelling of elastic behaviour
Carbon composites based on multi-axial multi-ply stitched preforms. Part 4. Mechanical properties of composites and damage observation
Carbon composites based on multiaxial multiply stitched preforms. Part 2. KES-F characterisation of the deformability of the preform...
Nondestructive measurement of axially nonsymmetric refractive-index distribution of optical fibre preforms
Carbon composites based on multi-axial multi-ply stitched preforms – Part 6. Fatigue behaviour at low loads: Stiffness degradation ...