查询词典 low pressure

ABSTRACT Low Pressure Casting is a kind of high efficient, low cost and net shape manufacturing processes playing an important role in foundry.

低压铸造作为一种高效低耗的精确成形方法，在铸造行业中占居着越来越重要的地位。

The consuming electronic product has already moved towards the era of the low gross profit now. In the market that is competed for in this way, consumer's demand for quality is higher and higher, and hope to require the cheap price to be bought. For electronic industry, it is a very great pressure, because will not only lower costs, but also improve the quality of the products. To electronic industry, the supplier has a great effect to the product quality. It's mean a lot of manufacturers just consider the low cost and neglect the quality supplied. This can cause quality failure cost, and has increased the cost. So, begin to have manufacturers to hope to gain the high quality like automobile industry. They want to carry out the quality management system ISO/TS16949:2002 of the automobile industry to improve quality and get the lower cost.

摘要 现在消费性电子产品已经走向了低毛利的时代，在这麼竞争的市场中，消费者对於品质的要求越来越高，且希望要求便宜的价格来购买，这对电子产业来说，是一个很大的压力，因为不只要降低成本，而且要提高产品品质；对电子产业来说，产品的品质往往掌握在供应商的手上，意思是说很多厂商只是一昧追求低成本而去忽略了供应的品质，这样反而会造成品质失败成本，而增加了成本，因此，开始有厂商希望可以做到像汽车产业那样的高品质，希望藉由汽车业的品质管理系统ISO/TS16949：2002的导入来提升品质、降低成本。

The result showed that the strong storm followed by mesoscale squall line was primary cause of strong sandstorm producing, steps and ladders short wave trough of 500 hPa was great criterion triggering system for the mesoscale squall line producing, the essential dynamic condition was provided by distortion field and the mesoscale low pressure of 700 hPa for the strong sandstorm forming and maintaining in mid-west of Hexi Corridor, the deep vertical circulation development condition was basic power that urged squall line to occur and sand dust to curl up, which was provided for the deep convection development by superimposition of lifting movement before ground cold front and ascendant current of secondary circulation in upper air jet entrance region, temperature and the barometric gradient around the cold front was enlarged by enhancement of ground thermal low and temperature diurnalvariation of afternoon, by which essential thermal energy unstable condition was provided for the gale and strong sandstorm eruption, the strong sandstorm appeared in downstream of -200 m^2s^(-2) center of vertical helicity, the vertical helicity had good instruction significance for development of squall line and landing region of sandstorm, the mesoscale squall line occurred in unstable stratification, basic condition of potential energy transforming as kinetic energy was provided by strong unstable stratification for the strong sandstorm forming and developing.

结果表明：中尺度飑线所伴随的强风暴是产生强沙尘暴的主要原因；500 hPa阶梯短波槽是中尺度飑线产生的大尺度触发系统，河西走廊中西部700 hp变形场、中尺度低压为强沙尘暴形成和维持提供了必要的动力条件；地面冷锋前上升运动与高空急流入口区次级环流的上升气流的叠加，为深对流发展提供了深厚的垂直环流发展条件，是促使飑线发生和沙尘卷起的基本动力；地面热低压的加强和午后气温的日变化加大了冷锋前后的温度和气压梯度，为大风、强沙尘暴爆发提供了必要的热力不稳定条件；强沙尘暴出现在垂直螺旋度为－200平方公尺/s^2中心的下游，垂直螺旋度对飑线的发展和沙尘暴的落区具有较好的指示意义；中尺度飑线发生在不稳定层结内，较强的不稳定层结为强沙尘暴形成、发展提供了位能转化为动能的基本条件。

By using global reanalysis data from NCEP/NCAR,the durative of a floating dust over Beijing during 7-10 in April of 2006 was analyzed.It was found that the impact systems of the floating dust weather were West Siberia cold eddy,Okhotsk warm high and Tibetan Plateau high ridge at the level of 500 hPa;the dry-cold air at the level of 700 hPa transferred to Beijing ceaselessly,and the cold advection and baroclinic instability were strong,the gale and dust storm occurred in the strong cold advection area;the weak instability stratification in surface layer and mid-low level in the south of North China resulted in weak ascending air flow,then transported dust particles to Beijing depending on the easterly wind in front of the surface low pressure.

文章摘要：使用NCEP/NCAR再分析资料对2006年4月7-11日北京浮尘天气过程的持续性进行分析，指出此次浮尘天气过程主要受500 hPa西西伯利亚冷涡、鄂霍次克海暖高压以及青藏高原高压脊影响；700 hPa有干冷空气不断向北京地区输送，冷平流和斜压性都很强，大风和沙尘暴发生在强冷平流区域；由于华北南部地区近地面至中低层存在弱的不稳定层结，容易产生弱的上升运动。

So the method could not be applied in cosmically industry.In allusion to the difficulties, this paper brings forward a brand new electrochemistry method for landfill leachate, makes a magnetism-electro reaction equipment, adopts low pressure, low frequency, periodic pulse electrolyse, almost conquers the polarization and passivation of the dissolubility metal pole.

针对如上困难，本文研究了一种新的垃圾渗滤液电化学处理方法，自制了磁—电水处理反应装置，采用低电压、低频率交变脉沖电源，较彻底地克服了可溶性电极的极化和钝化问题，并且采用磁场产生的特殊&磁搅拌&作用增强导电离子的选择性运动，从而更进一步提高了电解效率。

Ingersoll-Rand, as one of the largest professional manufacture of air compressor, has 130 years compressor manufacture experience and advanced technology. The production has the feature of steady pressure, oil free, low power consume, high efficiency and low noise. Ingersoll-Rand is the worldwide leader in package performance and sales, supply perfect compressed gas for industry and customer.

英格索兰公司作为目前世界上最大的空压机专业制造商之一，凭借130年空压机专业制造经验和先进技术，生产的CENTAC机组具有洁净无油、压力稳定、低耗节能、高效低噪的特点，在产品综合性能和销售量等方面长期处于世界领先地位，为工业和用户提供理想的压缩气体。

Bulk rock chemistry of Hujialing garnet clinopyroxenite in Rizhao of the Sulu ultrahigh-pressure metamorphic belt is rich in fusible composition and low in refractory composition when compared with that of the primary mantle. Whole rock has 44.04%~50.50% SiO2, high MgO(12.77%~18.73%), high GaO/Al2O3 (1.6~8.0), low alkali and Mg(superscript #)(74.82~86.13), which shows that the rock has an affinity to alumina-depleted komatiite.

与原始地幔相比，苏鲁超高压变质带的日照胡家岭石榴单辉辉石岩体全岩化学成分易熔组分均较高，而难熔组分均较低，全岩的SiO2含量为44.04%~50.50%，高MgO(12.77%~18.73%)，高CaO/Al2O3(1.6~8.0)，低碱，Mg的变化范围为74.82~86.13，成分特点类似铝亏损型科马提岩。

The principal synoptic systems of impacting snowfall in the early winter were the combinations of the westerly and south-to-north trough, moving plateau trough, plateau low pressure, plateaushear line, Bangladesh Bay storm; the configuration of the 850 hPa temperature anomaly field of the southern and middle Asia in the typical snow-abundant/scarce year on the plateau was "positive in the south and negative in the north", while the anomaly distribution of 500 hPa on the plateau and the eastern coastal area was "low in the west and high in the east".

结果表明：青海南部地区初冬降雪量呈缓慢减少的变化趋势，平均积雪量变化与年及其它季相比，呈微弱的减少趋势，平均积雪量与气温呈反相关，而与降雪量呈正相关；影响青海南部地区初冬降雪的主要天气系统是西风带南北槽结合类、移动性高原槽类、高原低涡类、高原切变类、孟加拉湾风暴类；典型多雪年高原及南亚与中亚地区850 hPa 温度距平场配置为&南正北负&型、500 hPa 高原与东部沿海地区距平分布为&西低东高&型。

We also studied the fine-grain reservoirs with low clay mass percent and found that it may also form low resistivity reservoirs under higher irreducible water saturation due to higher capillary pressure.

同时分析了细颗粒、粘土质量百分数不高的储层，高的毛细管压力使束缚水饱和度很高，同样能形成低电阻率油气层。

It has good advantages of high grinding efficiency, big drying capacity, product finess is easy to be adjusted, low noise, low power consumption, simple process flow, low abrasiveness, operating cost saving and etc.

该设备具有粉磨效率高、烘干能力大、产品细度易于调节、噪音小、电耗低、工艺流程简单、磨耗小、运行费用省等优点。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。