30年代，我国蚕业科学工作者开始把近代科学运用到柞蚕放养上来，改进了我国柞蚕放养技术。

In 1930s, the modern science and technology was applied to the tussah silk production and improved the techniques for the tussah silkworm raising in China.

youdao

30年代，我国蚕业科学工作者开始把近代科学运用到柞蚕放养上来，改进了我国柞蚕放养技术。

In 1930s, the modern science and technology was applied to the tussah silk production and improved the techniques for the tussah silkworm raising in China.

youdao