1) Content of N
含N量
2) N content
N含量
1.
In this study root morphologic parameters and C,N content of four diameter classes(0~2 mm,2~5 mm,5~10 mm,10~20 mm)were analyzed for 16 years old trees of Cunninghamia lanceolata(Lamb.
以16年生杉木人工林为对象,用根系图像分析软件(Win RHIZO TRON 2005a)和CN元素分析仪(Elementar Vario ELⅢ)测定4个径级(0~2 mm、2~5 mm、5~10 mm、10~20 mm)根的形态参数和C、N含量,用土壤呼吸测定系统LI-8100(LI-COR,USA)测定各径级离体根呼吸速率,分析不同径级根参数特点及其与根呼吸的相关性,并对根系离体后呼吸速率变化和测定时间选择进行了探讨。
2.
The results showed that when the N content in the steel increased from 0.
利用Gleeble模拟技术研究了不同N含量和热加工工艺对N80无缝管(33Mn2V成分)的影响。
3) nitrogen content
N含量
1.
The effects of nitrogen content on austenite grain size at high temperature and impact toughness of simulated welding HAZ and actions of second phase particles(Ti,Nb)N in series low carbon Ti-Nb microalloyed weldable steels were studied.
研究了系列低碳微合金Ti-Nb可焊钢中的N含量对模拟焊接热影响区(HAZ)高温奥氏体晶粒尺寸和冲击韧度的影响及其第二相粒子的作用。
2.
In this paper,the effects of free-air CO2 enrichment(FACE)and its interaction with nitrogen supply on the nitrogen content,uptake,allocation,and use efficiency of winter wheat variety Ningmai 9 at its different growth stages were studied in 2001—2003.
2001-2003年,利用我国唯一的农田开放式空气CO2浓度增高(free-air carbon dioxide enrichment,FACE)技术平台,研究了FACE条件下冬小麦宁麦9号不同生育期N含量、吸收、分配和N效率的响应。
3.
The nitrogen contents of samples nitrided at 2℃/min were higher than those of the samples nitrided at 5 ℃/min, and the nitrogen contents of samples with template before nitridation were also higher than that of the samples without template.
结果表明,以2℃/min的升温速率进行氮化后的分子筛的N含量高于以5℃/min进行氮化的分子筛的N含量,含模板剂的分子筛氮化后的N含量要高于不含模板剂的分子筛氮化后的N含量。
4) NH 3-N content
NH3-N含量
5) Content of α-N
α-N含量
6) NO3-N content
NO3-N含量
1.
[Method] Four N levels of traditional N fertilization amount(N1),80% of recommended N fertilization amount(N2),recommended N fertilization amount(N3),120% of recommended N fertilization amount(N4) were set up to study the effects of different levels on NO3--N contents in potato tubers and soil.
[方法]设置N1:传统氮肥施用量;N2:80%推荐氮肥施用量、N3:推荐氮肥施用量、N4:120%推荐氮肥施用量4个氮水平,研究不同水平对马铃薯块茎和土壤NO3--N含量的影响。
补充资料:茶叶含梗量检验
茶叶含梗量检验
stalk contents inspection of tea
茶叶含梗t检验(stalk eontents inspee-tion of tea)茶叶检验之一。对茶叶中茶梗数量的检测措施。茶梗是茶叶加工后残存f成品茶中的茎、梗部分物体。主要是采摘粗放或精制过程中拣剔不净所致。茶梗在各类茶中都有存在.人小、长短、色泽各异,在一定程度上影响茶叶的外形和内质。日本、埃及等国都列为应施检验项目。对于茶梗含最,茶类不同,要求也不同。一般红绿茶对照贸易标准样茶或成交样茶检验其含梗量,出口的压制茶类可含有茶梗,含梗量指标规定米砖6%、圆茶4一6%、滇沱茶0.5%、川沱茶3%,其检验方法因茶类不同而异。 红绿茶含梗量检验将待检茶叶通过分样器缩分、精确称取茶叶100克,均匀分布于白色瓷盘,用镊子逐一拣出茶梗,合并一起称重,计算(l’分率。 压制茶含梗量检验锯取试样一半《必要时用整块),放入燕笼内,汽蒸1一3小时,使梗叶易于分离时取出,将梗拣出,在烘箱内按茶叶水分检验法烘干称重,计算茶叶含梗的百分率。(严鸿德)
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