等压过程

The DG1900/25.4-Ⅱ1 domestic Supercritical once-through boiler was briefly introduced. Both steady pressure and energy storage reduced pressure pipe-blowing scheme were adopted at Xiangtan Power Plan. How to put the oil gun and 361 Valve into operation and to control the steam temperature when start up was analyzed.

简要介绍了国产DG1900//25.4-Ⅱ1 型超临界直流锅炉，大唐湘潭发电有限责任公司3 号锅炉调试吹管采用稳压和降压相结合的吹管方式，分析了吹管中出现的油枪投运问题、启动过程中温度控制、361 阀的运行方式等，提出了储水罐水位修正数据、吹管的控制要点及锅炉湿－干态转换注意点。

According to the analysis and computational results in this thesis, although the actual structure and work conditions of the pressure vessel in nuclear power station are much more complex than that of the pressure vessel model, the program FEARPV still can get quite good convergence on the plasticity andcontact iteration. And also the program FEARPV has good value stability, and good regularity. During the heating, compression, constant temperature, constant pressure, cooling and decompression process, the regularity is basically in common with that of the pressure vessel model.

由本文分析计算可知，虽然电站核压力容器的结构及计算工况较压力容器模拟体复杂得多，然而反应堆压力容器瞬态密封有限元分析程序对塑性迭代和接触迭代仍具有很好的收敛性，数值稳定性好，得到的结果具有良好的规律性，在升温、升压、恒温、恒压、降温和降压等过程中其规律和压力容器模拟体基本相似。

BeanBeanBean Red Medlar Powder takes the fresh natural red medlar as the main raw material and is finely made by applying the imported equipments and adopting modern technologies to rinse, dry at low temperature, ultra-finely comminute, extract, concentrate, pelletize, tablet, and package. There is no chemical fertilizer, pesticide or artificial additive in the course of growing and producing the red medlar which is natural, unpolluted and healthy.

&豆豆豆&牌枸杞红素，以天然、新鲜的枸杞为主要原料，运用现代高科技手段和进口设备经清洗、低温干燥、超微细粉碎、提取浓缩、制粒、压片、包装等工序精制而成，在种植及生产过程中，未使用化肥、农药及任何人工合成添加剂，系纯天然的健康产品。

BeanBeanBean Grapeseed Powder takes the fresh natural grapeseed as the main raw material and is finely made by applying the imported equipments and adopting modern technologies to rinse, dry at low temperature, ultra-finely comminute, extract, concentrate, pelletize, tablet, and package. There is no chemical fertilizer, pesticide or artificial additive in the course of growing and producing the grapeseed which is natural, unpolluted and healthy.

&豆豆豆&牌葡萄籽素，以天然、新鲜葡萄籽为主要原料，运用现代高科技手段和进口设备经清洗、低温干燥、超微细粉碎、提取浓缩、制粒、压片、包装等工序精制而成，在种植及生产过程中，未使用化肥、农药及任何人工合成添加剂，系纯天然的健康产品。

BeanBeanBean Seabuckthorn Powder takes the fresh natural seabuckthorn as main raw material and is finely made by applying the imported equipments and adopting modern technologies to rinse, dry at low temperature, ultra-finely comminute, extract, concentrate, pelletize, tablet, and package. There is no chemical fertilizer, pesticide or artificial additive in the course of growing and producing the seabuckthorn which is natural, unpolluted and healthy.

&豆豆豆&牌沙棘精，以天然、新鲜的沙棘为主要原料，运用现代高科技手段和进口设备经清洗、低温干燥、超微细粉碎、提取浓缩、制粒、压片、包装等工序精制而成，在种植及生产过程中未使用化肥、农药及任何人工合成添加剂，系纯天然的健康产品。

BeanBeanBean Blueberry Powder takes the fresh blueberry which grows in the Changbai Mountain as the main raw material and is finely made by applying the imported equipments and adopting modern technologies to rinse, dry at low temperature, ultra-finely comminute, extract, concentrate, pelletize, tablet, and package. There is no chemical fertilizer, pesticide or artificial additive in the course of growing and producing the blueberry which is natural, unpolluted and healthy.

&豆豆豆&牌蓝莓果精，以长白山新鲜的蓝莓果实为主要原料，运用现代高科技手段和进口设备经清洗、低温干燥、超微细粉碎、提取浓缩、制粒、压片、包装等工序精制而成，在种植及生产过程中，未使用化肥、农药及任何人工合成添加剂，系纯天然的健康产品。

During filtration, some parameters such as pressure drop over filter and the flux of liquid nitrogen were tested.

在试验中测试了过滤过程中压降变化和被过滤流体流量等参数，对试验结果进行了分析，得到了过滤器压降与工况参数之间的关系。

Assuming fluid is and viscid and slightly compressible, bubble collapse near rigid boundary and free surface is simulated, displaying characteristics such as formation, penetration and impact of reentrant jet as well as vortex ring and bubble rebound.

采用粘性、微可压流体模型，数值模拟了空泡在刚性边界和自由面附近溃灭及空泡溃灭后流动的发展，显示了空泡溃灭过程中的凹陷射流形成、空泡贯穿、射流冲击、涡环的形成和空泡回弹等流动特征，提出空泡回弹的另一种机制是凹陷射流冲击形成的旋涡。

Unbalanced state was kept at the bottom of the well by downhole casing shut-off valve in whole process unbalanced drilling operation, the oil reservoir was protected by unbalanced drilling and non-snubbing service.

在全过程欠平衡钻井作业过程中，通过井下套管阀开关，保证井底始终处于欠平衡状态，成功地进行了欠平衡钻进、不压井起下钻等作业，有效地保护了储层。

This article describes briefly process procedure and characters of 5 sets rolling tack welders for longitudinal submerged arc welding pipe unit,and introduces common defects during tack welding operation,such as air pocket,slag,arc burn,offset and misalignment etc.

简述了直缝埋弧焊管机组中五组压辊式预焊机的工艺过程及特点，介绍了预焊作业中常见的气孔、夹渣、烧穿、错边、焊偏等缺陷。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。