canada balsam是什么意思

用法例句

The "livable residential strategy planning" of Canada and its enlightenment on us;

加拿大的“宜居区域战略规划”及其对我们的启示

Mining Administrative Systems of America and Canada and Inspiration;

美国、加拿大矿业管理制度及启示

The Consideration and Experience of Environmental Protection in Canada;

加拿大环境保护工作初探

Primary Study on Genetic Toxicity of an Invasive Plant Erigeron canadensis L.;

入侵植物加拿大蓬遗传毒性的初步研究

Objective: To evaluate α-glucosidase inhibitors from Erigeron canadensis L.

目的:评价加拿大蓬提取物的α-葡萄糖苷酶抑制活性。

piger mainly fed on Crisium arvense(L.

在温度为25-28℃的养虫室内选择具有代表性的菊科植物及豆科、禾本科牧草共10科30种植物对欧洲方喙象进行寄主专一性测定试验,结果表明其食性专一,只取食加拿大蓟,个别成虫或幼虫在饥饿状态下仅少量取食菊科其他植物,但随后即拒绝取食。

The two bundles were made of Chinese wing-nut tree, Pterocarya stenoptera and Canadian poplar, Populus canadensis, respectively.

比较了枫杨Pterocaryastenoptera枝把与加拿大杨Populuscanadensis枝把在田间对棉铃虫Helicover paarmigera (H櫣ｂｎｅｒ)的引诱作用。