查询词典 trace

The feasible conditions for trace plumbum determination in red wine by graphite furnace atomic absorption spectrophotometry were studied.

研究了石墨炉原子吸收法测定葡萄酒中微量铅的适宜条件，采用标准加入法和塞曼效应校正背景，铅的线性范围为10μg/L～50μg/L，回收率为90%～110%。

The result of factor analysis can provide the changes of relative precipitation and temperature variations. In trace elements, Cu, As, Zn, Pb and Ni were apparently enrichmented in soil layers and are sensitive to climatic changes. Carbon isotope is more sensitive to climatic changes than that of oxygen isotope in loess stratigraphy. The heavy mineral are varified in the loess stratigraphy, but their content differences between loess and palaeosol is little. Though the palynologic analyses results reveal that pollens and spores are fewer in the loess stratigraphy, they differ greatly in loess layer and palaeosol layer not only in species but also in types, i. e., the pollens and spores indicating warm and moist climate, such as Lles, Podocarpus, Polopydium, Pteris grerilliana Wall, Pterocarya and Juglans appear in palaeosol layers, while those indicating cold and dry climate such as Ephedra, Artemisia, Chinopodiaceae, Picea and Abies exist mainly in loess layers. The pollen content of broad-leaved tree mainly consisting of Pterocarya is up to 60% in palaeosol 〓, while the content of Ephedra is more than 50% in 〓 loess layer, showing that the environment differed greatly when 〓 and 〓 were formed.

当然，常量元素氧化物的组合因子分析结果可提供相对降水与相对温度在剖面的变化，因而来反映气候状况更为理想；微量元素中Cu、As、Zn、Pb与Ni在成土过程中富集明显，亦较好地反映了气候变化；稳定同位素中的碳同位素比氧同位素更能敏感记录气候的变化；研究区黄土地层中重矿物种类较多，但黄土层与古土壤层中含量差异不大；孢粉分析结果揭示，尽管研究区黄土层中孢粉总量相对较为贫乏，但黄土层与古土壤层中孢粉种属相差较大：在古土壤层内出现了指示相对暖湿环境的冬青属、罗汉松属、水龙骨属、林下凤尾蕨、枫杨、胡桃等植物孢粉，而黄土层中麻黄、藜科、蒿属及冷杉、云杉含量较高。

There was a trace of sadness, a tender poignancy in her liquid brown eyes as she bid me an unspoken goodbye.

当她无声地向我示意"再见"时，她那水汪汪的褐色眼睛里流露出一种温柔的酸楚。

This paper discusses the analysis of non-metal elements by following ways:Determination of P,S and Si by IC P-AES;Determination of Cl,P and S by IC ;Determination of trace As by polarograph and HG-AFS;Determination of Se by IC P-AES and fluorometry;Determination of F,Cl and I by GB.

本文论述了川附子非金属元素的分析：用ICP—AES法测定S、P和Si；离子色谱法测定Cl、S、P；极谱法和HG-AFS法测定痕量砷；ICP-AES和荧光法测定硒；GB法测定氯、氟和碘。

Tentativea analysis trace selenium in radix puerariae and its soil property by microwave digesion-single sweep polarograph

采用微波消解单扫描极谱法测定了葛根及其种植土壤中微量硒的含量，并做了初步分析，为葛根产品的研发提供重要依据，也为进一步开发葛根优良品种和平衡施肥提供科学信息和依据。

By means of electric potential method and anodic stripping voltammetry , the trace Cd~(2+) in the soil samples of rich iron content can be determined by a 883—model polarograph, with the mercury membrane electrode of silver base sphericity as the indicating electrode and a large area of sheet—silver electrode as the reference electrode.

本文应用电位法，采用银基球型汞膜电极为指示电极，大面积银片电极为参比电极和883型极谱仪，阳极溶出法测定大量铁存在下的土壤样品中痕量镉。

It is the trace of a pomp, of course!

这是一个泵的踪迹，当然！

First trace back the historical development of the two methods. Then introduce the Purchase method and Pooling of Interest respectively.

本章首先追溯购买法和权益集合法的历史发展；接下来分别详细介绍了应用购买法的三个基本步骤、信息披露要求以及权益集合法的应用前提、账户记录、披露要求。

You like to take a small paint brush and trace a attractive mother and lovable animal plant you like to draw; You can already find each country on the map in 3 minutes, You know their national flag and inserted one by one in our country territory. This study, which you love, was never requested and forced, but you actually voluntarily did it. When we cross the street, so long the red light is shining you make us both stop and check both ways when it turns green. No matter how far the trashcan is, you seek it out to throw trash. You also on own initiative help to pick up the trash of others. You help mother to wash the bowl. You do chores to make your incidental toy money, because mother once had said to you must depending on own industry and obtains diligently.The visible earthquake disaster area child suffers distress, you will say that sad they quite pitiful good hungry, mother, the stuffed dumpling which will be us also forces in the compassion poor box to send to them; During the Olympic Games you watched the television, heard the national anthem and saw the national flag. You feel dignified sacred, and not say a word, stand at attention before the television, until the award ceremony ended. You did this even if were other country because you knew that they have won and should be honored.

你喜- 欢用小小的画笔描出最童真最可爱的-物植物还有你画的漂亮妈妈；你能在3-分钟内找到世界各个国家在地图上的-置，熟知他们的国旗并逐一插在本国-领土上，这是你最爱的学习玩耍活动-，妈妈从未要求和强迫你去做而你却-觉自愿做得最好；过马路只要是红灯-决不乱穿，垃圾箱再远也要寻到再扔-，看见小朋友乱扔垃圾你也会主动提-或帮着捡起；你帮妈妈拖地洗碗来挣-自己的零花玩具钱因为妈妈曾对你说-过要靠自己的勤劳和努力去获得；看-地震灾区小朋友受难，你会难过地说-们好可怜好饿，妈妈，把我们做的饺-子也塞进爱心捐款箱给他们寄去吧；-会在奥运会期间看电视，听到中国的-歌看到国旗就表情凝重神圣，一言不-发，庄严立正在电视机前，直到颁奖-式结束---因为你知道中国又赢了。。。。。。

The feature of oxygen isotope for magnetite from Abagong iron deposit reflects that the water in the fluid of mineralization resides in the initial magma, implying the magma genesis of mineralization. The similaritary features of REE and trace elements for coexisting apatite with magnetite in the Abagong, the Kiruna type and the Ninwu porphyrite iron deposit show their common genesis, indicating that Abagong iron deposit resulted from the intrusion of late ore magma due to the magma differentiation. The characteristic of sulfur isotope composition implies that the Abagong iron deposit resides in basaltic magma from mantle resource.

阿巴宫铁矿磁铁矿氧同位素特征反映了成矿流体中水来源于原始岩浆水，暗示该铁矿的岩浆成因；与磁铁矿共生的磷灰石稀土和微量元素特征与Kiruna型铁矿以及宁芜玢岩铁矿中磷灰石特征非常相似，表明它们具有相同的成因机理，反映出阿巴宫铁矿为岩浆分异的晚期矿浆贯入式成因；其硫同位素特征表明成矿物质源自幔源的玄武质岩浆。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。