Fifthly, slow development of agricultural service of science and technology stops fast grain production.

农业科技服务滞后，影响粮食生产水平提高。

youdao

First in China to adopt "slow structure" technology development of the deceleration starter has small volume, light weight (reduce 40%);

在国内率先采用“减速结构”技术开发的减速起动机，具有体积小，重量轻（降低40%）；

youdao

First in China to adopt "slow structure" technology development of the deceleration starter has small volume, light weight (reduce 40%);

在国内率先采用“减速结构”技术开发的减速起动机，具有体积小，重量轻（降低40%）；

youdao