Extract procedure的用法和樣例：
例句
- ObjectiveTo investigate the extract technology of compound HuangQi ChangNing granula.
目的探討復方黃芪腸寧顆粒的提取工藝。 - Because of small content in the plant, complicated extracting procedure and poor purity, the process of new drug R&D based on Danshensu has been hampered acutely.
然而，丹參素在植物中的含量甚少，提取工藝複雜且純度不高，這嚴重阻礙了以其為基礎的新葯開發進程。
