1·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.
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。
2·The different distilling methods freeze- method and dialyze- method of tussah and silkworm sericin were studied.
应用冰冻法和透析法研究了柞蚕和家蚕丝胶的提取方法。