preform meaning in English
vt.
1.预先形成[决定]。
2.把…初步加工，对(宝石等)粗加工。
n.
初步加工的成品；压片；雏形，塑坯预塑；(录音用)盘料；经过粗琢的宝石。
Examples
- The colorimetric methods involve the bleaching of a preformed color by the fluoride ion .
比色法涉及氟离子对预先形成的颜色的消色作用。 - Preformed flexible elastomeric cellular thermal insulation
柔性泡沫橡塑绝热制品 - Ablation performance of c c composites with different preforms
炭复合材料烧蚀性能 - Study on preform of c c composites for aircraft brakes
复合材料坯体结构的研究 - Unshaped refractory products . tests for preformed shapes
不定型耐火产品.预成型试验