查询词典 low-pressure

The low rate of the electron transfering through the multicrystalline network of a nano-crystalline thin film, and the low efficicency of the dye absorbing the low energy photons are two limiting factors that influence the photoelectric conversion efficiency of the cells.

电子通过纳米晶薄膜多晶网络的低速率和染料分子对低能量光子的低吸收率是影响染料敏化太阳电池提高光电转换效率的两个主要原因。

Based on the national tenth five magnitude project — Suzhou City Water Environment Improvement and Synthesize Demonstration item, we carried out the static simulation test and the dynamic simulation test under the condition of heavy pollution loading rate and low transparency and dissolved oxygen in polluted river of suzhou ancient city district. These investigations were on the base of the formers' work. We analyzed the purification effects and rules of plant floating-bed technology on polluted river water, and also applied the technology to purify the polluted river water in Miaojia River. Conclusions were summed up in the following:The dominance plant option test was carried out among Oenanthe javanica, Lolium mutliflorum and Allium sativum under low temperature condition. The results showed that the Oenanthe javanica was the dominance floating-bed plant under low temperature condition. Its net removal rate of TN、 NH_3-N、 TP、 COD_ were 51.3%、 65.2%、 55.6%、 57.6%, respectively, and inhibition rate of algae reached 92.3%.

本论文以国家863重大科技专项——&苏州市城市水环境质量改善与综合示范&项目为依托，在前人研究的基础上，根据苏州古城区污染河道污染负荷重、透明度及溶解氧低的实际情况，通过静态、动态模拟试验，研究了植物浮床技术对污染河水的净化效果及规律，同时在苏州古城区内的苗家河开展了植物浮床技术净化污染河水的示范应用，得出了以下结论：(1)低温条件下对水芹菜、多花黑麦草、大蒜三种浮床植物筛选的试验表明：水芹菜是低温条件下浮床植物的优势种，其对TN、NH_3-N、TP、COD_的净去除率分别为51.3%、65.2%、55.6%、57.6%，对藻类的抑制率达92.3%。

The calls of non-passerine are some kinds of monotonous dull vocalizations with the characteristics of low and deep frequency, single syllable, low basic frequency and with no ability of modulation in frequency and amplitude. Most of the calls are monotonous and low quality mainly based on the basic song. Compare the vocal of sub-oscine passerine with non-passerine, they have some similar aspects, but the former possesses of stronger capability of vocal control.

非鸣禽的叫声低沉而单调，音节种类单一，基本音频率低，缺乏频率调制以及幅度调制的能力，叫声的品质因数很低，不悦耳，大多为以基本音为主的单音调低音品叫声，亚鸣禽的叫声与非鸣禽近似，但在控声能力方面又有所提高。

In this thesis we used two types of low-carbon ductile as the basal of low-carbon ductile cast—infiltration, one is as-cast high-toughness pearlitic low-carbon ductile, the other is as-...

用我们自己配制的合金粉末进行低碳球铁表面铸渗合金化后，得到的表面渗层的硬度最高可以达到HRC58，远远高于母体的硬度。

A relative low lake level between 8660～6010 cal.yr BPwas reflected by the clayey silt sediment with the median size less than 25μam and the sandcontent less than 4%,and the Pediastrum concentration was normally low.Between 6010 and2250 cal.yr BP,the median size and sand content increased greatly,and the Pediastrumconcentration raised sharply,suggesting a relative low lake level.After 2250 cal.yr BP,boththe median size and the Pediastrum abundance abruptly declined,suggesting the lake returnedto high level and the climate changed to humid.

UG04孔硅藻记录重建的湖泊水位变化基本上支持孢粉重建的古植被和古气候：8660～7230 cal.yr BP硅藻组合以浮游类主导，浮游／底栖比达40以上，指示水位较高，气候略湿润；7230～2330 cal.yr BP浮游类硅藻丰度和浮游／底栖比降低，湖泊处于低水位，气候干旱；2330～930 cal.yr BP浮游类硅藻丰度和浮游／底栖比增加，湖泊水位升高，气候湿润。

It is possible to produce low-titanium aluminum alloy directly. Three months of periods of industrial test for production low-titanium aluminum alloy was conducted using the 80kA prebake electrolysis cells. The test results showed that the electrolysis cell can work stably, and the effect of TiO2 added into electrolyte on electrolytic process parameters, current efficiency, consumes of materials and energyare trifling. The titanium content in alloys is stable and the absorbility of Ti is high. The microstructure of electrolytic low-titanium aluminum alloy is homogeneous. The grain refinement effect is excellent comparing with that of alloys added titanium by melting Al-Ti master alloys and both alloys have the same grain refinement trend.

在80KA中型预焙电解槽上进行了为期三个月的低钛铝合金的工业试验，结果表明，电解槽工作状态稳定，TiO_2的加入对电解槽的主要工艺参数、电流效率、物料和能源消耗影响不大，合金的钛含量稳定，钛的吸收率高；所生产的电解低钛铝基合金的微观组织均匀，晶粒细化效果好，与熔配加钛的细化规律相同。

The structure of the circuit is mainly used in power systems of portable electronics. A super β lateral PNP is used as the output pass transistor,so that the design of this structure has low dropout, low quiescent current, low-linear regulation and load regulation characteristics, and has the functions of ON／OFF、the thermal 、overvolt and overcurrent profection.

该电路主要应用于便携式电子产品的电源系统中，调整管采用超β横向PNP管，使其具有低压差、低静态电流、低线性调整率和低负载调整率的特点，同时含有使能开关、过温、过压和过流保护等功能。

In order to meet the market development, our factory introduced a 55% focus on content protopine, protopine content 60%, 65% content protopine, and 70% content protopine, 75% and 80% and other low-grade protopine, low-grade films alkali, low-level protopine, and 90% content of 92% and other non-GB Product in order to adapt to different manufacturers and the general needs of distributors, products are exported to Shandong, Jiangsu, Zhejiang, Anhui, Guangzhou and other places, by our customers trust and.

为适应市场发展我厂重点推出了55%含量片碱，60%含量片碱，65%含量片碱，和70%含量片碱，75%和80%等各种低度片碱，低度片碱，低含量片碱，以及90%含量92%等非国标产品，以适应不同厂家和广大经销商的需求，产品远销山东，江苏，浙江，安徽，广州等地，深受客户的信赖和欢迎。

The psychrophilic enzymes is a kind that has high catalyst activety under the condition of low temperature and it is also a very important situation for the low-temperature catalyst to adapt to the low-temperature condition.

嗜冷酶是一类在低温条件下具有高催化活性的酶，也是低温微生物适应低温环境生存的重要条件。

They take the following three forms: a some strive forward to complete their democratization; b some witness failure in democratic elections and recollapse into undemocratic systems; c some get trapped in a low level of balance between low-functioning ruling elites and low-demanding populace.

不完全的民主有三种发展前景：（1）继续向前，完成民主化；（2）民主选举制度失败，转向一种不民主的制度；（3）在统治精英低效但公众对民主政治要求也低的情况下，更会堕入一种低水平平衡的陷阱。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。