1) primary yield
初级产额
2) secondary yield
次级产额
3) primary production
初级生产
1.
Annual cycle of phytoplankton biomass and primary production in the Bohai Sea simulated by a three-dimensional ecosystem model;
渤海浮游植物生物量与初级生产力变化的三维模拟
2.
The net primary productions of periphyton and macrophyte were 0.
浮游植物、大型水生植物和附生藻类在净初级生产力中的比例分别为93%、6%和1%。
3.
The primary production of Artemisia scoparia community is studied, the tesult indicates that the seasonal dynamics of primary production was evident, the aboveground primary production in May, June, July, August, September are 12.
研究了扫帚艾群落初级生产。
4) gross primary production
初级产量
5) primary products
初级产品
1.
In this paper,we used Cointegration analysis and Granger causality test methods to study on the real effect of the United States imports of manufactures and primary products from China on economic growth in the United States.
研究认为,美国GDP增长与美国自华制成品进口间呈反向长期均衡关系,与自华初级产品进口间则没有这种均衡关系,但美国自华制成品进口不是引致美国GDP下降的原因。
2.
The demonstration results indicate that the intra-industry trade indexes of the manufactured goods are higher than those of the primary products,and the intra-industry trade level of the technology or capital-intensive products is higher than that of the labor-intensive products.
入世后,我国饮料及烟类产品的产业内贸易趋势增强,而其他四类初级产品的产业内贸易指数呈逐年下降趋势;我国工业制成品的产业内贸易指数整体高于初级产品,工业制成品中技术或资金密集型产品的产业内贸易水平整体高于劳动密集型产品的产业内贸易水平。
3.
Under the policy of US tariff and trade, Philippine export structure consisting mainly of primary products such as sugar, hemp, coconut, tobacco, was strengthened during the American colonial period.
美统时期,在美对菲关税与贸易政策主导下,菲律宾以糖、麻、椰、烟等初级产品为主的出口商品结构得到强化,并集中于对美出口;美工业制成品则构成菲进口商品的主体。
补充资料：初级产额
分子式：
CAS号：
性质：辐射化学中初级产额是指物质吸收辐射能量后，在未发生后继反应前所产生的最初活性粒种(激发分子、离子和未热能化的电子)的产额。在实际应用中，初级产额是指所测得的从径迹中扩散出来在溶液中达到均匀分布的粒种的产额。
CAS号：
性质：辐射化学中初级产额是指物质吸收辐射能量后，在未发生后继反应前所产生的最初活性粒种(激发分子、离子和未热能化的电子)的产额。在实际应用中，初级产额是指所测得的从径迹中扩散出来在溶液中达到均匀分布的粒种的产额。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条