回流

The optimum conditions of refluxing Temperature: 70℃, Ratio of material and fluid: 1:18, Extracting time: 40min.

回流提取最佳操作条件为：提取温度70℃，提取料液比为1：18，提取时间为40min。

The optimal extracting techniques were A1B3C3, refluxing extraction for 3 times with 8 fold 70% ethand, 2 hours for each time.

绞股蓝总皂苷的最佳提取工艺为：药材加8倍量70%的乙醇，回流提取3次，每次2 h。

ResultsThe optimal technology condition was A2C2B3, that is, twice volume of 60% alcohol and refluxing three times, two hours once.

结果槐花中芦丁提取最佳工艺条件是：A2B2C3，即2倍量60%乙醇回流3次，2 h/次。

Results the optimal extraction condition of yanqing granule was: 200 ml water for 1/3 amount of drugs, refluxing extraction for 3 times and 0.5 h each time.

结果咽清颗粒的最佳提取工艺为1/3处方量的药材以200 ml水回流提取3次，每次0.5 h。

In some equipment, such as reactors, cleaning agent refluxing can be performed, in other cases, recirculation of cleaning agent is required.

在某些设备中，例如反应器，可以实行清洗剂回流，在其它情况，要求清洗剂重复循环。

Employing CuI(5 mol%), N,N-dimethylglycine hydrochloride(10 mol%) and K_2CO_3(2 equiv.) in refluxing THF as the optimized reaction conditions,the four-membered 4-alkylidene-2-azatidinones could be efficiently synthesized.

当以3-溴-3-N-苯基-丁烯酰胺为底物，在5 mol%CuI为催化剂，10 mol%N，N-二甲基甘氨酸盐酸盐为配体，2当量K_2CO_3作碱，THF回流的反应条件下，可以高效的合成2-亚甲基-4-氮杂环丁酮类化合物。

However, development of cement industry will also face disadvantageous factors: 1 along with the coming of high cost epoch, continued rising in costs of coal, power, mineral resources, environment, human resource and capitals and the increase in social responsibilities that enterprises should take on will bring restricting factors to the investment and development of cement industry; 2 on the basis of the gradual increase of industrial concentration, market competition will change from the current competition between large enterprises and small enterprises and between new dry process and backward shaft kiln technology to the competition among large enterprises and among new dry processes, so the extent of market competition may further extend; 3 along with RMB increasing in value, demand decreasing in north America, new production lines in Middle east being put into operation and the persistent high price of international shipping, national cement export will face huge menace; backward flow of export products will certainly aggravate market competition in some areas.

但水泥行业的发展也将面临不利因素。一是随着高成本时代的到来，煤炭、电力、矿产资源、环境、人力、资金等成本的不断提高及企业所承担的社会责任的增加，将对水泥工业的投资和发展平添抑制因素；二是在产业集中度逐步提高的基础上，市场的竞争将由目前大企业与小企业、新型干法与落后立窑工艺之间的竞争转为大企业与大企业、新型干法与新型干法之间的竞争，市场竞争的程度有进一步加大的可能；三是随着人民币的升值、北美市场需求的下降、中东新生产线的投产及国际航运价格的居高不下，我国水泥出口将面临巨大的威胁，出口产品的回流，势必将加剧局部地区的市场竞争。

Our main products are MPM stencil printing equipment, CAMALOT dispensing equipment, ELECTROVERT wave soldering equipment, reflow soldering equipment as well as cleaning equipment and ACCEL semiconductor cleaning equipment.

我们主要的产品是MPM钢板印刷设备，CAMALOT喷涂设备，ELECTROVERT波峰焊设备，回流焊设备和清洁设备以及ACCEL半导体清洗设备。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。