The kinds, application and preparation method of nano scale materials are introduced.

介绍了纳米材料的种类，应用及制备方法。

youdao

Application and preparation of a non-hydrogenation reducing-olefin catalyst were studied.

研究了一种非加氢降烯烃催化剂的制备及应用。

youdao

Application and preparation of a non - hydrogenation reducing - olefin catalyst were introduced.

介绍了一种非加氢降烯烃催化剂的制备及应用。

youdao

Knapp gave him a list of simple innovations to follow things like deeper plowing and better soil preparation, the use of only the best seed, the liberal application of fertilizer, and more thorough cultivation to remove weeds and aerate the soil around the plants.

NEWYORKER: Testing, Testing

Experience has shown that developing an application that meets the high standards expected by UNESCO takes time and that thorough preparation increases the chances of success.

UNESCO: Apply to join the UNESCO Creative Cities Network