杨树根浸提液对大豆、萝卜的高生长，油菜的高生长和根长生长具有显著的促进作用。
The water extract of poplar root promoted seedling growth of rape, soybean, white turnip and root growth of rape.
对长生命周期和高复杂度的产品来说，维护维修和大修是保证产品持续高效稳定运行的必要前提。
For long life cycle and high-complexity products, maintenance, repair and overhaul are the necessary prerequisites for sustainable, efficient and stable operation.
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