查询词典 m.

NO3--N pollution in drinking water at the depth of 20 m is serious with common and serious overproof rates of 39.3% and 7.1% respectively. NO3--N content in irrigation water for farmland and greenhouse at the depth of 40 m is 7.4 mg·L-1 and 9.6 mg·L-1 with respective common overproof rates of 25.0% and 37.5%, and zero serious overproof rate.

设施蔬菜栽培区表层地下水(地下饮用水， 20 m)受硝态氮污染严重，超标率和严重超标率为39.3%和7.1%；而深层地下水(农田和大棚灌溉水， 40 m)硝态氮含量7.4 mg·L-1和9.6 mg·L-1，超标率分别为25.0%和37.5%，无严重超标水样。

Here we introduced oxadiazole moiety to theside-chain of Ph-PPV to enhance the electron transport properties. The luminescenceefficiency and luminescence brightness (1.33cd/A, 9400 cd/m~2) of the Ph-PPV withside oxadiazole moiety are much higher than non-oxadiazole Ph-PPV (0.70 cd/A,2300 cd/m~2), and these polymers emitted green light which unaffected by theintroduction of oxadiazole moiety. Anthracene has a rigidity and planar structure which shows high photoluminescenceand thermo-stability.

结果表明，以十烷氧基作为间隔基使噁二唑单元键接在苯基取代PPV的侧链，所得材料制备的电致发光器件的效率和亮度(1.33cd／A，9400 cd／m~2)明显高于不含噁二唑单元的苯基取代PPV(0.70 cd／A，2300 cd／m~2)，噁二唑单元的引入并不影响材料的发光光色，膜状态下的荧光发射光谱和电致发光光谱均呈绿光发射。

The resultant pellet was layered on a gradient composed of 1.2, 1.8 and 2 M sucrose layers in 50 mM Tris, 1% SDS and centrifuged at 106,000 g for 120 rain at 4 ° C. The material recovered at the 1.8-2 M interface was diluted in 0.1 M TRIS with 2% SDS and pelleted (106,000 g, 60 min).

由此产生的颗粒是层次上的梯度组成1.2 ， 1.8和2男蔗糖层50毫米的Tris ， 1 ％ SDS和离心在十点六万克120雨在4° C的材料回收在1.8 M界面稀释后在0.1米的招聘2％ SDS和包衣（十点六〇〇万克， 60分钟）。

In this paper, a series ofmodel compounds of PPV--M-PPVs were synthesized. All of the M-PPVscontained two bridge double bonds that connect the phenyl rings. The research ontheir photooxidative degradation of the M-PPVs including mechanism and kineticswas systemetically conducted.

本文设计合成了一系列含有两个桥双键的聚对苯撑乙烯的模型化合物，并对它们的光氧化降解反应与氧化机理进行了深入系统的研究，并探讨了M-PPV在不同微环境下的发光性质，主要结果如下：一。

The microstructure of the sintered bone was observed by scanning electron microscope and mercury porosimeter. Results showed that the sintered bone possess the three dimensional space structure composed of macropores and micropores. The diameter of macropore was 50-400 μm and the diameter of micropore was about 1 μm. Results suggest the sintered bone of β-TCP remains the porous structure of natural cancellous bone which is benefit to growing of new bone.

结果显示β-磷酸三钙煅烧骨具有大孔结构和微孔结构相结合的三维空间结构，大孔孔径为50~400 μm，微孔孔径为1 μm左右，提示β-磷酸三钙煅烧骨保留了天然松质骨的多孔状结构，有利于新生骨组织的长入。

While the average bulk pore diameters which were measured by porosimeter were 0.33μm and 0.24μm for NMP and TEP system, respectively. It revealed that the permeate resistance was in the inner surface.

但利用孔隙测定仪所量测之平均孔洞直径分别为0.33μm与0.24μm，相近於内表面平均孔洞直径，表示内表面为主要透过阻力。

The determination of quercitin was performed on Century SIL C18 BDS (250 mm×4.6 mm, 5μm) column, using methanol-water-phosphoric acid (V:V:V=60.00:40.00:0.02) as mobile phase at a flow rate of 0.8mLmin^(-1) and UV detection at 360 nm. The determination of gallic acid was performed on Century SIL C18 BDS (250 mm×4.6 mm, 5μm) column, using acetonitrile-water-phosphoric acid (V:V:V=5.00:95.00:0.02) as mobile phase at a flow rate of 0.8mLmin^(-1) and UV detection at 272 nm.

槲皮素的测定条件为：Century SIL C18， BDS(250.0mm×4.6mm， 5μm)色谱柱，流动相为甲醇－水－磷酸（体积比为60.00：40.00：0.02），流速为0.8mLmin^(-1)，检测波长为360nm；没食子酸的测定条件为：Century SIL C18 BDS (250.0mm×4.6mm， 5μm)色谱柱，流动相为乙腈－水－磷酸（体积比为5.00：95.00：0.02），流速为0.80mLmin^(-1)，检测波长为272nm。

As consequence of agglomeration, the particle size was much larger than 2μm though; when adding solution of 0.5% SLS to redisperse the solid systems, the particle could retain stable in size from 30mins to 90mins following drying and reach smaller size of 500nm~2μm in most experimental groups.

因为冻乾后粒子彼此凝集的关系，许多固化系统的粒径皆大於2μm，而当以0.5% sodium lauryl sulfate溶液进行分散，粒径可以在冻乾后30分钟到90分钟维持稳定以及在许多实验组中维持在500nm~2μm的粒径范围内。

The oil pool with the NS extension is located in the northwestern part of the Jiangnanxuefeng Uplift, with an area of more than 100 km2. The thickness of bitumen\|enriched layers is about 60 m, where two layers of the saccharoidal dolomites of more than 15.6 m thick are filled by oil at the top of Upper Cambrian Zhuitun Formation.

该古油藏位于江南雪峰隆起西北缘，呈北东向展布；油藏分布面积约100 km2，沥青富集厚度约60 m，且在追屯组顶部发育2层累计厚度达15.6 m左右的砂糖状油浸白云岩。

The results showed that the MS2 fragmentation pathways of DASSSB were affected by the character and position of substitutes on salicylidene phenyl. The C=N cleaving to form fragmentation ion [M+H-283](superscript +) was dominant for DASSSB compounds with electron-donating group on the C4 of the salicylidene phenyl; while fragmentation ion [M+H-254] (superscript +) forming by C-C cleavage of the β-position of C=N was dominant for DASSSB compounds with electron-withdrawing group on the C5 of the salicylidene phenyl.

结果显示，这些化合物的ESI-MS/MS裂解方式与它们分子中水杨醛苯环上取代基的性质和位置有关：当水杨醛苯环上4位连接供电子取代基时，分子以CN双键断裂为主，生成[M+H-283]碎片离子；当水杨醛苯环上5位连接吸电子取代基时，分子以CN双键β位的C-C键发生断裂为主，生成[M+H-254]碎片离子。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。