查询词典 high and low

Sand making machine we offer has features of high performance in going through uncrushed materials, small influence by humidity (humidity can amount to 8%), end products with cubic shape, low flakiness rate, low noise (less than 95 db) and low dust.

可广泛应用于水电、公路、建筑、水泥、金属矿山等行业的细碎作业，产品粒形呈立方体，针片状含量低，在机制建筑砂、石料以及各种冶金矿渣的破碎中更是得到普遍使用，与其它类型的破碎机相比产量功效高。

Cold air was the factor of synoptic system that producing maximal effect on acid rain, followed by low pressure trough, especially the westpath frontolysis and low pressure trough in South China Sea, which have very obvious impact. Subtropical high pressure has a low impact to acid rain.

对酸雨影响最大的是冷空气，其次是低压槽，其中以西路锋消和南海低压槽影响较为明显，副热带高压影响较小。

During preparation, mercapto ethanol isooctanoate, alkyl or ester tin chloride and organic solvent are first heated and refluxed while adding catalyst; organic layer is then obtained through separating liquid and decompression distilled; and through further steps, the compound is obtained. The synthesis process of the present invention is simple, and has conversion rate higher than 95 %, normal pressure and low reaction temperature, low power consumption and less pollution, and the prepared compound has high reaction activity and low toxicity.

制备时，将异辛酸巯基乙醇酯、烷基或酯基氯化锡和有机溶剂加热回流，同时加入催化剂，然后通过分液，保留有机层，再对有机层进行减压蒸等步骤制得所述化合物；本发明合成工艺简单，转化率大于95％，反应在常压条件下，反应温度低，从而降低了能耗，减少了污染，所制备的化合物具有反应活性高和毒性小的特点，使用安全。

Comparing with marine oils in the adjacent areas, all crude oils in Hade 4 oil field (except for HD401 well) have following peculiarity: very similar in the composition of light hydrocarbon fraction, and the distribution of of phytane-series isoprenoid alkanes, high concentration in steranes, terpanes and their aromatized compounds, as well as rearranged steranes; low concentration of gammacerane, 24-norcholestanes and 24-rearranged steranes, and low C〓 regular steranes C〓/(C〓+C〓+C〓＜20%; 3-methyl steranes and 27-norcholestane predominated, respectively; very low concentration of dinosterane and 4-methyl steroid.

分析表明，与相邻地区海相原油比较，除最南端的HD401井原油外，其它井区原油均具有下述特点：轻烃馏分组成十分接近、植烷系列类异戊烯烷烃分布较为一致、甾萜类和芳香甾萜类环状化合物浓度较高、重排甾烷丰度较高、伽马蜡烷含量低、规则甾烷组成中C〓丰度低C〓/(C〓+C〓+C〓＜20％、甲基甾烷中以3-甲基甾烷为主、甲藻甾烷和4-甲基甾烷丰度极低、降胆甾烷中以27-降胆甾烷为主、24-降胆甾烷和24-重排降胆甾烷丰度低。

A process for partial conversion and low-temp transform of CO in the synthetic ammonia plant where coal is used to generate gas features that the Fe-Mo catalyst for partial conversion of CO, anti-poisoning agent and Co-Mo catalyst for low-temp conversion are used and the temp of semi-water gas is controlled to 200-260 deg.C at entering anti-poisoning layer, and 150-250 deg.C at the segments of said Co-Mo catalyst layer, and lower than 300 deg.C at bed layer to prevent high-temp reversal of sulfurizing reaction and make the catalyst activity optimal. Its advantages are long service life of catalyst, low system resistance, saving energy and convenient operation.

本发明是中小合成氨厂以一种CO部分转化抗毒保护层配低温变换的工艺，涉及煤造气合成氨厂0.6～2.0MPa半水煤气变换工艺流程，该工艺用铁－钼CO部分转化催化剂、抗毒剂，配钴－钼低变催化剂，半水煤气进入部分转化抗毒层温度为200～260℃，进钴－钼低变催化剂各段温度为150～250℃，床层温度控制在300℃以内，避免高温下反硫化反应发生，保护催化剂活性处最佳状态，寿命延长、系统阻力小、节汽、节电，具有比其他变换工艺更好地节能效果，操作方便，有效生产时间长，经济效益显著等特点。

For wire bonding,we got methods to avoid low-k material layer crack and IMC crack by gold wire selection,capillary design optimization,and wire bonding process window study;Wire sweep issue was declined,after use reverse wire bonding technology to get low wire loop,define high wire loop and low wire loop between neighbour wires to reduce wire cross and split transfer course into several segments by different transfer speed to control mold flow;For molding and to different packages,as a physical method,add suitable presser during different cure process,it can reduce warpage value;As chemical methods,optimized component of molding compound or added flexiblier,it can decline thermal stress and warpage.

在引线键合方面，通过对不同纯度金线的选择、劈刀设计的优化、以及对引线压焊工艺窗口的研究，找到了可降低焊盘碎裂，金铝间化合物分层等问题的方法；通过使用反向压焊来控制线线弧高度和在邻近线间使用高(来源：A7aB4848C论文网www.abclunwen.com)低线弧来控制线弧以及模塑注塑速度细分化的方法，有效降低了冲线值；在模塑方面，针对不同封装形式，通过封装模块在烘烤过程中优化外加压力的时机，利用物理方法有效减低了翘曲；此外从化学角度出发，通过对模塑材料配方的优化以及添加应力释放剂，有效降低了封装内的热应力，减小了封装模块的翘曲。

Frigon was chosen as the experimental, According the quality of the heavy oil materials which have high oil content and low sericin content, technical conditions were initially set at the level of low pH value 、low temperature and enforced presoaking process. And then, these surfactants and builders were chosen to test in the presoaking and refining process, getting some kinds of surfactants with lowest oil content on refined waste silk. Following that, they were tested for best oil-removing effect in mixture.

实验中，选择了滞头原料为试验原料，根据绢纺愿料冶胶量低，含油量高的特点，初步确定了低pH值、低温和加强预浸的工艺方案，然后对所选的各类表面活性剂和助剂进行了预浸、精练工艺试验，从中选出较好的几个品种进行不同类型的复配试验，在复配的基础上试验工艺条件—温度、时间、碱用量对残油率、残胶率的影响确定小样最佳工艺。

Company and the Chinese Academy of Sciences Institute of Chemistry, Nanjing University of Technology Institute of Chemical Technology has a good technical cooperation, product quality can meet the needs of different customer requirements, in particular, high content, low-arsenic, low lead, low-iron phosphorus trichloride, oxychloride P-selling more than a dozen provinces and cities nationwide, autonomous regions and exported to Europe, Southeast Asia and Taiwan, production and sales and market share in the same industry in the country ranked the top three, Jianping people adhere to the "credibility first, customer first, service first" operating purposes, warmly welcome customers at home and abroad to discuss cooperation with our company.

公司与中科院化学研究所、南京工业大学化工学院有着良好的技术合作，产品质量能满足不同客户的要求，尤其高含量、低砷、低铅、低铁的三氯化磷、三氯氧磷畅销全国十几个省市、自治区及出口到欧洲、东南亚和台湾地区，产销量和市场占有率在全国同行业中居前三甲，建平人恪守&信誉第一、顾客至上、服务至上&的经营宗旨，热忱欢迎国内外客户与我公司洽谈合作。

The company was established in 2002, with the most advanced production equipment, products with low noise and low power consumption and long life of the characteristics of Division I sell a variety of standard models bearing model specifications diameter 1-15 mm, diameter 30 mm Following the metric system, English, flange series bearings, stainless steel bearings, ball bearings thrust plane, and other micro-bearings; agent and also imports NMB, NSK, KOYO, TPI, NTN,,,, and so on brand-name imported bearings, low-priced sales Imports original 830 zz, 520zz, 695zz cooling fan bearings; widely used in various types of micro-motors, fitness equipment, computer cooling fan, instruments, computers, motor vehicle, precision instruments, machinery, household appliances, medical equipment, fishing gear, High-end toys, and other fields.

本公司成立于2002年，拥有全国最先进生产设备；产品具有低噪音、低功耗、长寿命之特点；我司销售各种各样的规格型号轴承，规格型号内径1－15mm、外径30mm以下的公制、英制、法兰系列轴承，不锈钢轴承，平面推力球轴承等各类微型轴承；并且还代理进口NMB、NSK、KOYO、TPI、NTN、、、、等等名牌进口轴承，低价销售进口原装830zz、520zz、695zz散热风扇轴承；广泛用于各类微型电机、健身器材、电脑散热风扇、仪器仪表、计算机、汽车电机，精密仪器，机械设备，家用电器，医疗器械，渔具，高档玩具等领域。

In view of the study, there were large seasonal varying value of water resource carrying capacity and high probability of water scarce conjunctures during the low water season in the urban districts of Nanming and Yunyan, while there were small seasonal varying value of water resource carrying capacity and low probability of water scarce conjunctures during the low water season in the districts of Xifeng and Xiuwen county.

研究认为云岩、南明两城区水资源承载力的季节变化较大，在枯水季节容易发生水资源超载而引发的水危机；而修文、息烽等县水资源承载状态的季节性变化较小，在枯水季节的超载程度较轻。

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。