查询词典 precipitation

When precipitation decrease 20% and temperature increase 2℃, average annual NEP of study area would be negative, and become carbon source.

降雨减少20%，温度增加2℃的情景下，小流域时空平均的NEP则为负值，变为碳源。

Comparing with these two senarios, effects of decreasing precipitation on NPP and NEP of study area are higher than that of increasing temperature.

降雨减少对小流域NPP和NEP减少的绝对数值要大于温度增加所引起的NPP和NEP的减少。

In the end the influencing factors and the occurrences of drought disaster are compared and analysed, for example, precipitation, temperature, the El Ninon year, SOI , sunspots, surface runoff low season.

简要对比分析了陕西干旱灾害的影响因子，如降水及气温、厄尔尼诺事件、南方涛动指数、太阳黑子、地表径流等与陕西干旱的关系。

The conclusions were as follows: theνO-H andνC=O IR absorption maxima shifted towards higher wave numbers after imprinting 17β-estradiol on TFMAA-co-TRIM copolymer with the red shift of theνO-H groups being apparent after precipitation polymerization for 16h while that forνC=O groups being observed after polymerization for 24h. A strong interaction between TFMAA and 17β-estradiol was confirmed by the high selectivity for 17β-estradiol, as indicted by the values of the separation factor of isomers of 17β-estradiol/17α-estradiol (2.28) and the imprinted factor (3.01). Particle diameter of TFMAA-co-TRIM polymer was between 300 nm and 1.5μm, which suited well for solid phase sorbent throughout at low column pressure. The recognition of imprinting TFMAA-co-TRIM polymer for sterol molecules was driven by enthalpy eluted with acetronitile, and low temperature was in favor of the separation of sterol structure analogues on imprinting column. TFMAA-co-TRIM polymer possessed of determinate anti-heat stability, with melting point beginning at 255.84℃, Tp=257.40℃, control TFMAA-co-TRIM polymer and imprinting TFMAA-co-TRIM polymer were respectively decompounded at 267.79℃and 343.11℃, and solid micro-extraction noddle prepared by the special polymerization also showed definite recognition for 17β-estradiol by GC/MS detecting at 270℃. By selection of various washing and elution solvents, elution reagents of close polymerization system were of more advantage in template molecules retention and recognition on molecularly imprinted solid phase extraction column. At a certain extent, progesterone, 17α-estradiol, 17β-estradiol and 4-androstene-3, 17-dione could be intercepted on the MISPE column. Especially, MISPE had high selectivity for progesterone, and imprinting TFMAA-co-TRIM polymer could achieve adsorption balance within 50 min by absorption kinetics test for 17β-estradiol. However, MISPE column showed better selectivity and enrichment property for 17β-estradiol than C18 and CSPE columns according to the data from HPLC and GC/MS analyses. Recovery of 17β-estradiol on MISPE column was up to 85.5% while when prime extracting solution of milk powder was sampled, the recovery of CSPE and C18 columns were 43.7% and 30.7%, respectively.

通过研究阐明：紫外聚合产物TFMAA-co-TRIM中的νO-H振动吸收峰在聚合16h后红移，νC=O振动吸收峰在聚合24h后红移；TFMAA-co-TRIM对雌二醇异构体的印迹因子达到了3.01，α为2.28，优于其它功能单体参与得到的聚合物识别特性；TFMAA-co-TRIM聚合物粒径介于300 nm至1.5μm之间，作为色谱固定相具有良好的通量和低的柱压；在乙腈流动相中，TFMAA-co-TRIM分子印迹固定相的分离过程主要被焓驱动，低温有利于分子印迹固定相分离甾醇结构类似物；TFMAA-co-TRIM分子印迹聚合物在255.84℃时开始熔融，Tp=257.40℃，聚合物CP的降解温度在267.79℃，MIP降解温度在343.11℃，制备的固相微萃取头初步经GC/MS 270℃的耐热性测定；不同的洗提溶剂筛选证明了选择接近聚合溶剂的洗脱体系更有利于MISPE发挥识别效应；分子印迹固相萃取柱对孕酮、17α-雌二醇、17β-雌二醇和雄烯二酮都具有不同程度的保留特性，可作为此类化合物的吸附材料，特别对孕酮强保留的富集特性，可作为孕酮的选择性识别吸附剂，其分子印迹聚合物对17β-雌二醇的吸附动力学测定显示在50 min内基本达到吸附平衡，具有作为传感器核心敏感材料的潜力；对比萃取奶粉中17β-雌二醇性能，MISPE柱比非分子印迹固相萃取柱和C18柱具有更高的保留，回收率依次为85.5%，43.7%和30.7%。

If half of your landscaped areas are paved or covered with nonporous materials, precipitation will drain to other to drain to planted soil areas.

如果您的花木种植区一半的道路，或与无孔材料覆盖，降水将流失到其他排的种植面积的土壤。

Therefore, it is very important to investigate the role of nonsolvent additives in membrane formation by immersion precipitation both in the investigation on the mechanism of membrane formation and in the preparation of the commercial membrane.

为适应不同膜过程，需要使用非溶剂添加剂调整铸膜液的配方，获得理想的膜结构和性能。研究NSA对浸入凝胶成膜过程的影响，在理论和实践两方面都具有重要意义。

Based on this point of view, a mechanism for polymeric membrane formation by immersion precipitation was developed to interpreter the role of nonsolvent additive, which is helpful to select the suitable nonsolvent additive and the amount used for high performance polymeric membrane.

基于上述观点，本文提出了浸入凝胶过程中聚合物膜的形成机理，解释了NSA在浸入凝胶成膜过程中的效应，从而为选择不同的NSA和加入量，制备高性能的聚合物膜提供理论指导。

The seasonal evolution, precipitation, convection, low-level west wind and SST all have a trend of spreading northeastward.

西北太平洋夏季风的季节演变，降水、对流、西风和海温都有向东向北扩展的趋势。

At pentad 31 or 32 and after monsoon onsets, precipitation, convection, low-level west wind and SST extend northeastward, and at nearly pentad 41 they arrive at the most northeast zone quickly, and then their intensities decrease, but they still have a trend of extending eastward.

在31或32候(6月初)季风爆发后降水、对流、西风和海温开始向东向北扩展，在41候(7月下旬)左右时都迅速达到最北地区，之后强度减弱，但仍有向东扩展的趋势。

This dissertation is divided into three parts. The first part is studies on calcium distribution changes during spermatogenesis, epididymal maturation, capacitation, acrosome reaction, oocyte maturation and egg fertilization using in situ precipitation by potassium antimonate and Ca〓 fluorescent probes at electron and light microscope levels. The main results are: 1 Ca〓 was probably involved in the condensing process of nucleoplasm during spermatogenesis.

本论文分为三个部分，第一部分主要是采用焦锑酸钾原位定钙法和Ca〓荧光染料在电镜和光镜水平对哺乳动物精子发生、附睾成熟、获能、顶体反应及卵母细胞成熟和卵受精过程中Ca〓的分布变化规律进行了系统的研究。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。