查询词典 urea-formaldehyde

Maximum gallic acid yield ( 83.8%) was obtained after Escherichia coli was cultivated aerobicly in 100mL liquid culture medium with 7g/L tara tannin extract and 1g/L complementary urea on snaker (120 rpm) at initial pH 6.0 and 28℃for 28h, while maximum tannin reduction rate (43.6%) was obtained after 5g/L glucose was supplied instead of urea in the same degrading conditions above.

当塔拉单宁浸提物浓度为7 g/L、补充的尿素浓度为1 g/L、初始pH为6.0、250 mL锥形瓶装液量为100 mL、28℃振荡(120 rpm)培养28 h时，棓酸产率可达83.8%；当补充的葡萄糖浓度为5 g/L时，塔拉单宁降解率可达43.6%。

The results showed that granular urea amended with dicyandiamide and N- thiophosphoric triamide induced the highest soil nitrate-reductase activity, granular urea brought about the highest soil urease activity and microbial biomass C a...

结果表明，施用硝化抑制剂和脲酶抑制剂涂层大颗粒尿素肥料的土壤硝酸还原酶活性最高；施用大颗粒尿素，脲酶活性最强，微生物量碳、氮最高。

Acrylic resin as coated material, N- thiophosphric triamide and dicyandiamde as biological inhibitors, with Fluid Bed spraying biological inhibitors on urea granular surface and coated it with acrylic resin afterward, four coated urea fertilizers were made for monitoring slow/controlled effects of coated fertilizers in distilled water.

采用丙烯酸树脂为包膜材料，以NBPT和DCD为生化抑制剂，利用流化床对尿素进行涂层生化抑制剂及包膜，制备4种包膜肥料，对这些包膜肥料在水中的控释效果进行了研究。

Acrylic resin as coated material, N- thiophosphric triamide and dmyandlamde as biological inhibitors, with Fluid Bed spraying biological inhibitors on urea granular surface and coated it with acrylic resin afterward, four coated urea fertilizers were made for monitoring slow/controlled effects of coated fertilizers in distilled water.

采用丙烯酸树脂为包膜材料，以NBPT和DCD为生化抑制剂，利用流化床对尿素进行涂层生化抑制剂及包膜，制备4种包膜肥料，对这些包膜肥料在水中的控释效果进行了研究。

In this dissertation, the efforts were focused on design and synthesis of chiral tmsymmetrical urea, cholic acid and heteroaromatic molecular tweezers and their molecular recognition as well as enantioselective recognition. A series of useful and creative results have been obtained.Three new types of chiral molecular tweezers containing unsymmetrically disubstituted urea unit, four new types of chiral molecular tweezers based on steroid cholic acid and one type of heteroaromatic molecular tweezers involving multiple hydrogen-bonding site have been designed and synthesized.

本文致力于新型手性不对称脲、胆甾和芳杂环类分子钳受体的设计合成及其对阴离子、中性分子和手性分子的识别及对映选择性识别性能研究，取得了一系列具有重要学术意义与应用前景的创新性结果。

According to the synergistic effects of weed control and the inhibited availability to ammonifying becteria and actinomycetes while herbicides were used with urea mixture, that has formulated a wettable powder of butachlor+londax and a granular of butachlor + londax + urea.

根据除草剂和尿素混用的杀草增效作用和对氨化细菌和放线菌的抑制作用，创制了丁草胺+农得时可湿性粉剂和丁草胺+农得时+尿素颗粒剂。

The results of SEM photography of WSCU indicate that the coating texture of potassium-type gel coated urea is dense, and the crystal of gels is tightly felted on surface of urea crystal which is contributed to the abrasion-resistant performance of WSCUs coaling.

扫描电镜成像图分析表明，钾型保水剂包膜尿素的包膜质地密实，保水剂晶面与尿素晶体表面具有紧密粘接面，这种紧密粘接面赋予钾型保水剂包膜耐磨性好，不易脱落的特征。

The method pressurizes and domesticates lactic acid bacteria under the concentration which is close to or higher than the concentration of gastrointestinal urea of patients with uremia, which cultures conversion urea with high efficiency and food-grade lactic acid bacteria which adapts to gastrointestinal environment.

本方法在近似于或者高于尿毒症患者胃肠尿素浓度下对乳酸菌进行加压驯化，培育出了高效率转化尿素、适应胃肠环境的食品级乳酸菌。

In order to study the effect of high density ensilaging techniques on the fermentation quality of the silage, eight combination (alfalfa、smooth bromegrass、alfalfa + smooth bromegrass、alfalfa +corn flour、alfalfa + smooth bromegrass+ corn flour、smooth bromegrass + corn flour +urea、cornstalk and cornstalk + corn flour +urea) were used in this experiment.

为研究高密度青贮技术对青贮发酵品质的影响，本试验分别选用3种不同牧草、3种不同牧草与精料配合(苜蓿、无芒雀麦、苜蓿+无芒雀麦、苜蓿+玉米面、苜蓿+无芒雀麦+玉米面、无芒雀麦+玉米面+尿素、青贮玉米、青贮玉米+玉米面+尿素)，在3种不同工艺——高密度青贮、常规青贮、高密度压块青干下对高密度青贮与常规青贮的发酵品质及青贮前后营养物质的变化及高密度青贮与高密度青干块营养物质的变化进行比较研究。

The experiments of different blend ratio s of the controlled released urea and conventional urea were conducted in Xinpo Village and Hexing Farm,respectively.

在驻马店市的新坡村与和兴农场进行了控释尿素与普通尿素掺混比例对小麦产量及氮肥利用率的影响试验。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。