回流
- 与 回流 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The method comprises: adding 4-(3,4-dichlorophenyl)-1-tetralone and solvent at a ratio of 1:(3-4) into a three-necked flask with a stirrer, heating under stirring until 4-(3,4-dichlorophenyl)-1-tetralone is completely dissolved, heating to 60-100 deg.C, refluxing for 0.5-2 h, cooling the filtrate to -5-10 deg.C, filtering, recrystallizing to obtain refined 4-(3,4-dichlorophenyl)-1-tetralone, and drying at 40-80 deg.C to obtain dry 4-(3,4-dichlorophenyl)-1-tetralone.
该方法的步骤是:在带搅拌的三颈瓶中依次加入4-(3,4-二氯苯基)-1-萘满酮和溶剂,溶剂与4-(3,4-二氯苯基)-1-萘满酮的L∶W为3~4∶1,将上述4-(3,4-二氯苯基)-1-萘满酮及混合精制溶剂搅拌下升温,使4-(3,4-二氯苯基)-1-萘满酮全部溶解,升温至60~100℃,回流0.5-2h;滤液用冰水冷却至-5~10℃,过滤,所得物料再用上述方法进行一次重结晶得到精品4-(3,4-二氯苯基)-1-萘满酮,40~80℃干燥后即得到干品4-(3,4-二氯苯基)-1-萘满酮。
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They include:① the "three-horse carriage" system of the rural youth education,② the "dumbbell type" management system of the rural youth secondary education,③ the "spindle type" investment management system of the rural youth secondary education,④ the new security mechanism and system of the rural youth secondary education,⑤ the new management system of the teachers of the rural senior middle school,⑥ the management system of the professional and technical training of the rural youth,⑦ the seven patterns which rely on the Rural Communist Youth League to exploit rural youth human resource,⑧ the "management modeling carbinol structure" and the management system of the rural youth center,⑨ the system connecting various rural youth organizations, economical entities and the government, and ⑩ the mechanism of leading and security which can attract the youth workers gone out to come back.
包括:(1)关于农村青年教育的&三驾马车&体系的建立;(2)&哑铃型&农村青年中等教育管理体制架构的建立;(3)&纺锤型&农村青年中等教育投资管理体制的建立;(4)新的农村青年中等教育的保障机制及其体系的建立;(5)新的农村高级中等学校师资管理机制的建立;(6)农村青年职业技术培训的管理体制的建立;(7)依靠农村共青团组织开发农村青年人力资源开发的途径及其作用机制——七种模式的建立;(8)农村青年中心管理体制和运行机制的&仿甲醇结构管理模型&的建立;(9)农村经济实体与政府及各种农村青年组织关系体制的建立;(10)农村外出青年劳动力回流的疏导和保障机制的建立。
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The temperature curve is shown as the following fig for reference.
下图表示回流焊的温度曲线,以兹参考。
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Catalytic Reforming in the whole paragraph Prehydrogenation variables controlled reactor inlet temperature, pressure and separation of liquid level tank, stripper pressure and liquid level, liquid level back to tank, furnace exit temperature.
在整套催化重整预加氢段中的受控变量有反应器的入口温度、分离罐的压力和液位、汽提塔的压力和液位、回流罐的液位、加热炉出口温度。
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The key draining veins were protected during the operation according to the results of the MR brain surface anatomy scanning; the recovery of neurological function after operation was compared and the outcome of operation was evaluated by follow up.
术中根据成像结果有目的地保护重要的回流静脉,对比患者手术前后神经功能恢复状况,并进行随访来评价手术效果。
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Methods: 22 cases of parasagittal meningiomas, which diagnosed by CT and MRI preoperation, confirmed by pathology postoperation in hospital from 2006.9 to 2008.1 of Second Affiliated Hospital of Zhejiang University, were evaluated the ambient draining vein of the tumor by MR brain surface anatomy scanning.
分析本院经头颅 CT 及 MRI 诊断为矢状窦旁脑膜瘤,利用显微手术技术切除并经病理证实的的22例患者;术前均运用磁共振脑表面成像技术评估与肿瘤关系密切的脑表面回流静脉情况。
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Qingfeng sink deep inside the area, steep-walled back, Blot out the Sun Zhu Shu, awe-inspiring temples, the main scenic area covers an area of 2500 mu, at last, in the next three Temple;-Qiang of the Three Gorges, located at the junction of Green God with Leshan, a total length of 25 Km sub-Schott, North Mindanao, the Three-Qiang, for the ancient Shu Qiang residence.
景区内青峰冥壑,峻壁回流,竹树蔽日,殿宇森然,主景区占地2500亩,分上、中、下三寺;平羌三峡,位于青神与乐山交接处,全长25公里,分犁头、北峨、平羌三峡,古为蜀羌人居住地。
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Why not allow the steam into the return piping and simply not use a steam trap?
为什么不让蒸汽进入回流管道而不使用疏水阀?
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In addition to this valve disc is free to lift, the other part of the same as the cut-off valve, the fluid pressure valve from the valve seat sealing surface of valve lift, medium return A42C Type Pound-Grade Low Lift Spring Loaded Safety Valve led to a seat on the disc down and cut off the flow.
此阀门除了阀瓣可以自由地升降之外,其余部分如同截止阀一样,流体压力使阀瓣从阀座密封面上抬起,介质回流导致阀瓣回落到阀座上,并切断流动。
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Apart from the working limitations resulting from its structural property, the flat plate heat pipe carries out heat dissipation through the evaporation and condensation of the working fluid. Thus, if the working angle of the fluid is adverse to its backflow, the heat pipe will fail easily. Furthermore, not the orientations of all the heat sources are favorable to the functioning of the heat pipe. To compensate for this drawback, this research focuses primarily on the development of a composite structure which will reduce the effect of gravity on the working fluid. Generally speaking, the heat pipe is divided into three main categories: the groove type, sintered metal type and mesh screen type, as shown in Table 2. As far as capillary force is concerned, the sintered metal type and mesh screen type show better performance. As mentioned in R.
平板式热管除了因其结构特性而产生的工作极限之外,由于其作用乃是透过工作流体的蒸发及凝结进行散热,故若是其工作角度不利于液体之回流,便容易使热管失效,且并非所有之发热源都是位于有利于热管工作之位置,因此本研究之主要目的为设计一可减少重力对工作流体影响之复合式结构;一般而言,热管之结构大致可分为沟槽、烧结及网格三种(如表2所示),其中烧结及网格结构有较佳之毛细力,在 R。
- 推荐网络例句
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Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.
最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势,并设计了一款彩色夜视摄像机。
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Only person height weeds and the fierce looks stone idles were there.
只有半人深的荒草和龇牙咧嘴的神像。
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This dramatic range, steeper than the Himalayas, is the upturned rim of the eastern edge of Tibet, a plateau that has risen to 5 km in response to the slow but un stoppable collision of India with Asia that began about 55 million years ago and which continues unabated today.
这一引人注目的地域范围,比喜马拉雅山更加陡峭,是处于西藏东部边缘的朝上翻的边框地带。响应启始于约5500万年前的、缓慢的但却不可阻挡的印度与亚洲地壳板块碰撞,高原已上升至五千米,这种碰撞持续至今,毫无衰退。