pine oleoresin
英
美
松脂
双语例句
- Translucent brittle substance produced from pine oleoresin; used especially in varnishes and inks and on the bows of stringed instruments.
用松树的油性树脂制成的半透明的易碎物质，尤其用于清漆和墨水及装弦的弓上。 - Study on New Technology for Isolating Levopimaric Acid from Pine Oleoresin
从松脂中分离左旋海松酸的新工艺研究 - However, for slash pine continuous oleoresin flowing lasted at least for 20 to 30 days, the longest is up to 80 to 100 days, with an average yield of the oleoresin 294.1 g per tree.
湿地松钻一次孔其连续流脂时间最短为20～30d，最长可达80～100d，平均单株产脂量为294.1g。 - A light colour 422 Resin with high softening point and reasonable acid value was synthesized directly from pine oleoresin.
以松脂为原料直接合成一种色泽浅、软化点高、酸值合格的422树脂。 - This paper deals with the works of pine resources, oleoresin's tapping techniques and the chemical modification and utilization of rosin and turpentine, which have been carried out for 30 years in China.
本文略述了我国的松树资源、松脂采集和三十年来松香松节油产品的化学改性和应用。 - According to the results, under the current technique term, for masson pine there is continuous oleoresin flowing for only 2 days in one borehole drilling period, and the borehole tapping is not suitable.
试验结果表明，在目前的技术条件下，马尾松钻一次孔其连续流脂时间最长为2d，不宜进行钻孔法采脂。 - Chemical characteristics of oleoresins from Chinese pine species for OLEORESIN PRODUCTION
中国采脂树种松脂的化学特征 - In China, mature pine forests are on the verge of exhaustion and pine oleoresin is mainly extracted from middle aged and young pine forests of natural secondary growth.
我国松树成熟林濒于枯竭，松脂主要采自天然次生林的中幼林，有限的松林遭受过量砍伐和违章采脂的破坏，致使松脂可采资源下降。 - Pine Oleoresin Resources Straits and Strategy in China
我国松脂资源的困境及对策