研究了1，2，4-三氯苯和萘对抽穗期水稻叶片光合特性的影响。
The effects of 1,2,4-trichlorobenzene and naphthalene on photosynthetic characteristics of rice leaves were studied.
分析比较了三个发育阶段银杏叶片光合作用的特性及规律。
The laws and characteristics of three development stages were analysed and compared.
用ANSYS软件对某发动机叶片的振动特性进行了分析。
Vibrating characteristic is analyzed on an engine vane with the software ANSYS.
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