Liquid PAC (poly aluminum chloride) produced by the coagulant plant of Shaoguan Water Company in Guangdong province was tested experimentally to examine some parameters related to its application.
本文对韶关市自来水总公司净水剂厂生产的液体PAC应用的有关参数进行了试验研究。
Grape seeds contained seed oil and proanthocyanidins which were generally named plant poly-phenol.
葡萄籽中含有葡萄籽油和植物多酚类化合物——原花青素。
And then studied on tea garden with tea plant plucked in shoots and left in twig, and breeding seedlings with seedlings, analysed the practicability of poly-leaves cutting.
继而又对采叶留穗茶园以及以苗繁苗进行了研究，分析了茶枝梢头扦插的可行性。
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