传统的动物筛选模式劳动强度大，效率低。
Animal screening is the traditional screening method with hard work and low efficiency.
草莓生产不仅劳作时间长，而且劳动强度大。
The working time is long and the working intensity is high in strawberry production.
天然水沤麻存在费工、费时、劳动强度大、质量不稳定、污染环境等缺点。
Natural water retting has the weak points of long retting time, hard sledding, unstable quality and water pollution.
应用推荐