初速度

The ideal program for developing penetration technique is approached from the aspects of reservoir heterogeneity, initial proration velocity and optimal perforation plan (the extent of perforation and height of water avoidance ).

运用数值模拟的方法，结合油田的实际资料，建立了数值模拟模型，从油藏非均质性、初配产速度及最佳射孔方案等方面，探讨了水力深穿透射孔技术开发底水油藏的理想方案。

In the 1940's the portal frame was appeared, and the light enclosing structure which was composed by the colored contour plate and the cold-formed thin-wall steel purlin was used massively in the 1960's .

现代轻钢房屋建筑体系诞生于二十世纪初，于二战期间得到快速发展，其间多用于对施工速度要求很高的战地机库、军营等。

Different biological and ecological characteristics, virulence, sporulation, conidia bourgeon, Protea-Bse activity leve and colony growth of 6 strains of Beauveria bassiana were measured respectively. The results were calculated by grey relational analysis and the optimum sequence was built from the professional comparison of each strain's characteristics. Two strain's have a potential of appling in mass production, BD-B015 and BD-B038 were abtained. The revisory mortality to Laphygma exigua Hubner were 88.33% and 86.70%.The infected rate were 86.67% and 85.27%.

测定初筛获得的6个球孢白僵菌菌株的毒力、产孢量、萌发率、胞外蛋白酶活性及菌株生长速度等多个生物、生态学指标，从专业角度构建最优序列，经灰色分析和不同菌株毒力效价显著性比较，筛选出了两株具有较大生产潜力的优良菌株BD-B015和BD-B038，对甜菜夜蛾的校正死亡率分别为88.33%和86.70%，僵虫率分别为86.67%和85.27%。

In this paper, the precise initial guidance law based on velocity gain guidance and the state transition matrix for orbit interception were proposed.

对于轨道拦截问题，给出了一种基于速度增益制导和状态转移矩阵的精确初制导方法。

The first break is picked up from synthetic P-wave record, and the distribution of surface velocity is analyzed.

基于合成纵波记录拾取了初至信息，对地表速度的分布特征进行了分析。

Since the early 20th century emergence of the original 60-type amplifier, the amplifier has been to lower the drift, noise and power consumption, higher speed, gain and input voltage, as well as the development of greater output power.

自20世纪60年代初出现原始型放大器以来，放大器一直在向更低的温漂、噪音和功耗，更高的速度、放大倍数和输入电压，以及更大的输出功率发展。

Starting in January, stocks on the big board took off with a whoosh that by December sent the market up 37% and carried every average out into space.

在1月份初，股市的飞船"嗖"一声地起飞了，截止到12月时股市就增长了37%，并仍以这样的平均速度冲向太空。

The current theory and application of Al-Si alloy mainly focus on the study of hypoeutectic and eutectic, therefore we systematically analyzed the modification process of hypereutectic Al-Si alloy based on the methods and results of predecessors. Several factors including the modification temperature, the content of modifier, the available holding time, the times of repeat melting , the casting temperature and the speed for cooling have been studied in order to understand its effects to the composition, function and performances of primary silicon and eutectic silicon.

中文摘要本文针对目前Al-Si合金相关应用和理论的研究多集中于亚共晶和共晶合金的情况，在前人的研究成果和研究方法的基础上，对过共晶Al-Si合金变质处理进行了较为系统的分析，研究了变质剂的成分配比、变质温度、变质剂的加入量、变质后的静置时间、浇注温度及冷却速度等因素对过共晶铝硅合金中初晶硅和共晶硅的大小、形状、数量和分布的影响。

The current theory and application of Al-Si alloy mainly focus on the study of hypoeutectic and eutectic, therefore we systematically analyzed the modification process of hypereutectic Al-Si alloy based on the methods and results of predecessors. Several factors including the modification temperature, the content of modifier, the available holding time, the times of repeat melting , the casting temperature and the speed for cooling have been studied in order to understand its effects to the composition, function and performances of primary silicon and eutectic silicon.

本文针对目前Al-Si合金相关应用和理论的研究多集中于亚共晶和共晶合金的情况，在前人的研究成果和研究方法的基础上，对过共晶Al-Si合金变质处理进行了较为系统的分析，研究了变质剂的成分配比、变质温度、变质剂的加入量、变质后的静置时间、浇注温度及冷却速度等因素对过共晶铝硅合金中初晶硅和共晶硅的大小、形状、数量和分布的影响。

When the cooling rate is 1001000℃/min, some primary Si are granular, others are rodlike.

当冷却速度为1001000℃/min时，初晶硅呈颗粒状和棒状的混合态。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。