Experiments were carried out in Great Britain and American on the impregnation of wood with vegetable tars and extracts. 在大不列颠和美州就进行过用植物焦油和提取物来浸渍木材的试验。
The metallography samples fabricated by the vacuum impregnation of resin are introduced. 详细介绍了真空浸渍树脂法制备金相样品的制备过程。
