查询词典 mixed blessing

Based on the investigation of a large amount of the related academic literatures at home and abroad, a series of new heat-resistant magnesium alloys have been investigated based on AE41 alloy by Ca and Si alloying as well as substituting LPC mixed rare-earth metal for Di mixed rare-earth metal in this paper.

在阅读分析国内外相关技术文献的基础上，本文以AE41合金为基础，通过Ca、Si元素的微合金化以及用无钕的LPC稀土替代稀土Di，以获得常温力学性能相当于和150℃～175℃耐热性能优于AE42的廉价镁合金。

After that, we used these mixed distributions to re-estimate the split population duration model; also used the AIC Value, Likelihood Ratio Test, and t-test to compare the quality of different models, and it showed that the mixed split population duration model is better than the single distribution model.

我们以混合机率分配重新估计区分母体持续时间模型，并且以AIC值、概似比检定、t-检定比较各种不同的区分母体持续时间模型的优劣，结果显示混合机率的区分母体持续时间模型优於单一分配的模型。

This report is focused on the analyses of basic competition strategies and marketing policies for Beijing's ready-mixed concrete enterprises, on basis of systematic study on the current market situation that Beijing's ready-mixed concrete industry is facing.

本报告的重点在于运用企业竞争和市场营销的相关理论知识，在系统分析目前北京市预拌混凝土行业面临的市场环境的基础上，分析并提出了预拌混凝土企业的基本竞争战略、营销战略和适宜的营销组合。

In addition, to promote the use of bulk cement is an important way to the use of ready-mixed concrete and ready-mixed mortar to stop stirred at the scene.

此外，推广使用散装水泥的重要途径是使用预拌混凝土和预拌砂浆，杜绝现场搅拌。

The use of ready-mixed concrete and ready-mixed mortar, not only reduced pollution but also improve the speed of construction projects to ensure engineering quality, and bring it into line with construction of a mandatory standard.

使用预拌混凝土和预拌砂浆，不仅减少了污染，还可以提升工程建设速度，保证工程质量，使其符合建设工程强制性标准。

The interspecific coordination effects of oat+vetch mixed annual pasture were studied with eleven treatments on alpine grassland in the up-stream area of Shiyang River. The results show that the interspecific coordinated effects raised obviously the utilization efficiency of such resources as solar energy, nutrients and water in sward of oat mixed with vetch. The height of the whole sward community, and dry material yields per hectare were improved.

研究了石羊河上游高寒草地一年生牧草燕麦与毛苕子的种间协同增产效应，结果表明，混播群落中燕麦与毛苕子对光能、养分、水分等资源利用的相互协同作用，提高了资源利用效率，促进了整个群落草层高度的增长和单位面积干物质产量的增加。

The ethylene producing process includes: distilling 5-45 % concentration ethanol solution to obtain mixed ethanol-water vapor, heating the mixed ethanol-water vapor to 150-350 deg.c, catalytic reaction in a gas-solid reactor to obtain coarse ethanol product, cooling, gas-liquid separating to eliminate components with boiling point higher than 70 deg.c and obtain ethylene gas, and washing, drying and refining to obtain ethylene product.

其特征是将乙醇蒸馏和化学催化制乙烯工艺过程耦合，浓度为5～45％乙醇经蒸馏系统得到乙醇-水混合蒸气，该乙醇-水混合蒸气继续加热到150～350℃后进入气-固催化反应器中经催化剂作用得到产物为粗乙烯，粗乙烯冷却后，使用气液分离装置去除其中沸点大于70℃组分得到乙烯气体，乙烯气体依次通过洗涤、干燥和精制得到乙烯产品。

The purification method is that the oxalic acid difluoro lithium borate needing to be purified is dissolved in solvent with high solubility first, then the solution is mixed with nucleation agent, the mixed solution is performed through solid-liquid separation, crystallized solid matters are put in a vacuum drying oven for drying, so that purified LiODFB products are obtained.

一种草酸二氟硼酸锂的提纯方法，该方法是先将需提纯的草酸二氟硼酸锂溶解在溶解性高的溶剂中，然后将该溶液与析晶剂进行混合，通过固液分离，将析晶出的固体物质置于真空干燥箱中干燥，即得纯化的LiODFB产品。

This research not only provided management technology and method for the mixed uneven-aged stands of coniferous and broad-leaved trees in Changbai mountains, also it have important referring value on the mixed uneven-aged stands management in other area.

本研究不仅为长白山地区云冷杉针阔混交林的经营利用提供了方法技术，而且对其他林区的针阔混交林经营也有着重要的参考价值和借鉴意义。

Based on stands-level forest ecosystem, referring intensive management method of natural mixed uneven-aged stands—control method, the mixed stands of coniferous and broad-leaved trees, in which spruce and fir are dominant species, were studied in this thesis;and explored sustainable management model on forest ecosystem level about economy, ecological environment and society.

本文以林分级别森林生态系统为基础，借鉴了天然异龄林集约经营方法—检查法，对长白山过伐林区以云冷杉为主的针阔混交林的森林可持续经营进行了研究，并从经济、生态环境和社会3个方面探索了森林生态系统尺度上的可持续经营模式。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。