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In order to assess the change of triploid populus tomentoza pulp plantation long-term-site productivity, The paper studied on effects of aboveground litterfall, fine root turnover and wet dust precipitation in nutrient cycling of triploid populus tomentoza pulp plantations at different ages,namely 2a、4a、5a、6a.It studied influence of different factors on decomposition of leaf、tree bark and twig of triploid populus tomentoza to select the operations to accelerate the decomposition and nutrient release. Finally, it studied influence of different intercrops on plantation site productivity and the relationship of intercrops and triploid populus tomentoza to select suitable intercrops. The main results as follows:(1)The aboveground litterfall of triploid populus tomentoza increased along with age from 216.03±59.7gm~(-2) at 3a to 482.38±101.3gm~(-2) at 7a, The N returned by litterfall wasl8.38±2.46kg.hm~(-2)a~-121.63±2.25kg.hm~(-2a~-139.51±4.61kg.hm~(-2a~-138.89±4.89kg.hm~(-2a~(-1) at 3a、5a、6a、7a respectively. The P returned by litterfall was 5.80±0.62kg.hm~(-2)a~(-1)、8.16±0.94kg.hm~(-2)a~(-1), 11.31±1.33kg.hm~(-2)a~(-1)、11.76±1.37kg.hm~(-2)a~(-1) at 3a、5a、6a、7a respectively. The nutrient returned by fine root turnover increased along with age, too. The N returned by fine root turnover was 3.85±0.41kghm~(-2)a~(-1)、5.22±0.63kghm~(-2)a~(-1),7.62±0.89kghm~(-2)a~(-1),9.17±1.22kghm~(-2)a~(-1) at 3a、5a、6a、7a respectively. The P returned by fine root turnover was 0.73±0.07kghm~(-2)a~(-1)、1.69±0.09kghm~(-2) a~(-1)、1.92±0.31kghm~(-2)a~(-1)、1.96±0.21kghm~(-2)a~(-1) at 3a、5a、6a、7a respectively. The leaf was the principal pathway to return nutrient to soil among litterfall, fine root turnover and wet dust precipitation. The proportion of returned N by leaf was 74.84%、71.96%、78.58%、75.03% at 3a、5a、6a、7a respectively,The proportion of returned P by leaf was 85.93%、80.31%、83.04%、83.23% at 3a、5a、6a、7a respectively. Therefore, it is important to protect and utilize the leaf in order to maintenance and enhance the long-term-site productivity of triploid populus tomentoza pulp plantation.

本文采取时序研究法，以3a、5a、6a、7a共4个不同年龄的三倍体毛白杨纸浆林为对象，研究了地上凋落物、细根周转、湿沉降在林分N、P营养元素循环中的作用及不同年龄林分N、P营养元素循环的特征，以评价三倍体毛白杨纸浆林长期立地生产力的变化；采取网袋法研究了不同因素对落叶、树皮、树枝分解的影响，以确定加快其分解、促进养分释放的措施：同时研究了不同间作物对林地影响、林木与间作物之间关系，以选择能维持立地生产力的合适的间作物种类等内容，得到以下结论：(1)随着年龄的增加，三倍体毛白杨地上凋落物的数量从3a的216.03±59.7gm~(-2)增加到7a的482.38±101.3gm~(-2)，通过凋落物归还的N分别为：3a时为18.38±2.46kg.hm~(-2)a~(-1)，5a时为21.63±2.25kg.hm~(-2)a~(-1)，6a时为39.51±4.61kg.hm~(-2)a~(-1)，7a时为38.89±4.89kg.hm~(-2)a~(-1)，归还的P分别为：3a时为5.80±0.62kg.hm~(-2)a~(-1)，5a时为8.16±0.94kg.hm~(-2)a~(-1)，6a时为11.31±1.33kg.hm~(-2)a~(-1)，7a时为11.76±1.37kg.hm~(-2)a~-1随着年龄的增加，通过细根周转归还的养分也在增加，归还的N分别为：3a时3.85±0.41kghm~(-2a~(-1)，5a时5.22±0.63kghm~(-2)a~(-1)，6a时7.62±0.89kghm~(-2)a~(-1)，7a时9.17±1.22kghm~(-2)a~-1归还的P分别为：3a时0.73±0.07kghm~(-2a~(-1)，5a时1.69±0.09kghm~(-2)a~(-1)，6a时1.92±0.31kghm~(-2)a~(-1)，7a时1.96±0.21kghm~(-2)a~-1从地上凋落物、细根周转、湿沉降三种不同途径归还林地养分所占的比例来看，地上凋落物中的落叶是归还养分主要途径，年龄在3a、5a、6a、7a时，通过落叶归还的N所占比例分别为74.84%、71.96%、78.58%和75.03%，归还的P所占比例分别为85.93%、80.31%、83.04%和83.23%。

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深圳市弘尚电子有限公司，产品以时尚、潮流、精美、新颖、小巧、实用为重点。销售、开发、生产加工：流行礼品、赠品，促销品，纪念品，装饰品和小型玩具。我们的产品可以零售、批发、贸易，定制加工。1MP3录音笔，闪光梳子，闪光高尔夫球，发光背包，发光指示牌，感温高脚杯，小夜灯收音机，左右鞋台钟笔，莲花手机座，收音机笔，来电闪光手表，来电闪手机灯电筒，电子唸佛机，窃听器，大魔术盒万年历，魔术盒计算器笔，七彩笔，优盘笔，闪存笔，留言笔，录音笔，闹钟秒表笔，电筒笔，隐形验钞笔，红酒开瓶器，音乐开瓶器，手机照明灯，USB台灯，USB充电器，USB风扇，U盘笔，即时应急充电器，手摇充电器，车载手机充电器，车载氧吧，金属风火轮，塑胶风火轮，车载免提。

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深圳市弘尚电子有限公司，产品以时尚、潮流、精美、新颖、小巧、实用为重点。销售、开发、生产加工：流行礼品、赠品，促销品，纪念品，装饰品和小型玩具。我们的产品可以零售、批发、贸易，定制加工。1MP3录音笔，闪光梳子，闪光高尔夫球，发光背包，发光指示牌，感温高脚杯，小夜灯收音机，左右鞋台钟笔，莲花手机座，收音机笔，来电闪光手表，来电闪手机灯电筒，电子唸佛机，******，大魔术盒万年历，魔术盒计算器笔，七彩笔，优盘笔，闪存笔，留言笔，录音笔，闹钟秒表笔，电筒笔，隐形验钞笔，红酒开瓶器，音乐开瓶器，手机照明灯，USB台灯，USB充电器，USB风扇，U盘笔，即时应急充电器，手摇充电器，车载手机充电器，车载氧吧，金属风火轮，塑胶风火轮，车载免提。

This study is to give a solution for the estimation of flash point for mixtures, the necessity for classification of flammable liquids. The traditional models for predicting flash point of mixtures usually by the activity coefficient approach. However, the parameters of activity coefficient were regressed from phase equilibrium data in the literatures. If there is no such parameter in literatures for the desired mixture, the model cannot predict the flash point oft hat mixture. Thus, this research aims at the improvement of deficiency of the flash point prediction models in the literatures by useing UNIFAC (Universal Quasi-chemical Functional Group Activity Coefficient) equation, Dortmund-UNIFAC equation and Lyngby-UNIFAC equation. In this study, we were aim at the prediction model for miscible mixtures.From the result, it is suggested to use different type of UNIFAC equation to estimast activivity coefficient in the predition of flash point for different mixture type.

易燃液体分类的主要依据参数为闪火点值，因此本研究目的为解决易燃液体中混合物分类时所面临到的闪火点值缺乏的问题，而在过去文献中所提出的闪火点预测模式会使用到活性系数，但这些模式使用到的活性系数均需要相平衡的数据以回归其所需参数，若所欲估算闪火点的混合溶液文献上未有相关参数，则无法有效利用闪火点预测模式估算其闪火点，因此针对文献中现有闪火点预测模式的缺点，利用描述液体混合物活性系数UNIFAC (Universal Quasi-chemical Functional Group Activity Coefficient)方程式、Dortmund-UNIFAC方程式和 Lyngby-UNIFAC方程式，建立发展一闪火点预测模式，而本研究以互溶溶液为对象。

FlashSpring is very flexible and provides you with different ways of exporting presentations to Flash format, such as solid Flash clips, multipage Flash clips, a set of Flash clips embedded in a Flash-based player.

flashspring是非常灵活，为您提供不同的方式出口简报Flash格式，如固体的Flash剪辑，多页的Flash剪辑，一套的Flash剪辑嵌入式在一个基於闪存的播放器。

When the flash unit is fully charged, the flash-ready lamp on the flash unit lights and the flash mark in the viewfinder display appears.

一旦闪光装置被充好电，闪光装置上的闪光灯准备就绪，指示灯就亮起来，同时在取景器显示中出现闪光标记。

The article focuses on Flash animation for the solution to problems, from a technical point of view can not be over-reliance on Flash, should make use of other technology-rich Flash animation of visual expression; to improve modeling capabilities, in shape not only the pursuit of "alternative" style ; grasp the movement of animation can not be over-reliance on Flash for several deformation, so monotonous movements, stiff; master the basic knowledge of lens design, the lens forms, master lens fluid connection method, grasp the lens space and time in order to improve Narrative, performance capacity.

文章重点探讨了针对Flash动画所存在问题的解决途径，从技术角度上不能过分依赖Flash，应该借助其它技术丰富Flash动画的视觉表现力；提高造型能力，在造型上不能仅仅追求"另类"的风格；把握动画运动规律，不能过分依赖Flash所提供的几种变形形式，使动作单调、生硬；掌握镜头设计基础知识，镜头表现形式，掌握镜头联接流畅的方法，把握镜头的空间与时间，以提高叙事、表现能力。

METHODS:By using Vision Monitor visual evoked response imaging system,the standards for five obtained Flash Electroretinogram were recorded on 53 normal subjects (73 eyes),including F-ERG to a weak flash in the dark-adapted eye,F-ERG to a strong flash in the dark-adapted eye,oscillatory potentials,F-ERG to a strong flash in t...

应用法国Metrovision公司生产的Vision Monitor视觉诱发系统检测正常人53例73眼。F-ERG的5个标准反应，包括暗适应25dB弱光刺激时的反应、暗适应0dB强光刺激时的反应、振荡电位、明适应白色标准闪光刺激时的反应和明适应快速重复闪烁光刺激的反应。

METHODS: By using Vision Monitor visual evoked response imaging system, the standards for five obtained Flash Electroretinogram were recorded on 53 normal subjects (73 eyes), including F-ERG to a weak flash in the dark-adapted eye,F-ERG to a strong flash in the dark-adapted eye, oscillatory potentials, F-ERG to a strong flash in the light-adapted eye, and F-ERGs to a rapidly repeated stimulus.

应用法国Metrovision 公司生产的Vision Monitor 视觉诱发系统检测正常人53例73眼。F-ERG的5个标准反应，包括暗适应25dB弱光刺激时的反应、暗适应0dB强光刺激时的反应、振荡电位、明适应白色标准闪光刺激时的反应和明适应快速重复闪烁光刺激的反应。

" Flash tube, also flash tube:a gas discharge tube used in an electronic flash to produce a brief, intense flash of light."

闪光管：一种用于在电子闪光时产生短暂而强烈的光束的气体释放管。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。