阐述了国内离子注入金属材料改性技术所取得的研究成果及国外的研究概况；
The domestic research achievement on new technology of ion implanting of metal material and studies made abroad are described.
根据研究的主要成果及近年来的最新进展，对山东省桑树种质资源的鉴定与评价研究概况进行了述评。
According to the research main result and latest progress in recent years, comment the general situation of identification and appraisal of mulberry germ plasm resources of shandong province.
从人工冻土冻胀的影响因素、物理模拟概况、数值模拟现状及冻胀抑制等方面总结归纳了国内外在冻胀及其抑制上的研究成果。
According to influence factors of artificially frozen soil, physical simulation, numerical simulation and the control of frost heave, this paper sums up the research achievement of frost heave.
本文简要介绍近年来天然产物开发研究的概况，包括氨基酸、蛋白质、酶、淀粉、纤维素、糖类及其衍亍生物、油脂、天然色素、甜味素、食品、饮料等方面的应用研究及成果。
This paper reviews briefly the recent progress in the development for natural products, including amino— acid, protein, enzyme, starch, fibre, sugar oii, natural color material, food, and drink ete.
本文简要介绍近年来天然产物开发研究的概况，包括氨基酸、蛋白质、酶、淀粉、纤维素、糖类及其衍亍生物、油脂、天然色素、甜味素、食品、饮料等方面的应用研究及成果。
This paper reviews briefly the recent progress in the development for natural products, including amino— acid, protein, enzyme, starch, fibre, sugar oii, natural color material, food, and drink ete.
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