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The result showed there existed significant differences among families in seedling growth, dry matter accumulation, leaf shape as well as root parameters at high and low nitrogen levels. Remarkable reduction in seedling height, dry matter accumulation, leaf and root parameters were observed under low nitrogen stress, whereas larger proportion of photosynthesis production was allocated into roots to promote nitrogen absorption. Family variation in seeding growth, leaf and root parameters were increased under low nitrogen stress in comparison with high nitrogen level, which would be benefit to discriminate superior L. chinense families with high nitrogen efficiency. Nitrogen efficiency of different L.

结果表明:不同氮素水平下,马褂木苗的生长、干物质积累、叶片和根系等性状皆存在显著的家系遗传差异;低氮胁迫将显著抑制马褂木苗叶片发育和根系生长,影响苗高生长和干物质积累,但低氮素水平下生产的光合产物则较多地分配至地下根系部分以促进对氮素的吸收利用;与高氮处理比较,低氮胁迫加大了苗木生长、叶片和根系参数等家系遗传分化,有利于鉴别高氮效率的马褂木优良家系。

According to the selected electric actuator determine the electrical parameters Because of different electric actuator manufacturers have different electrical parameters, design selection Butterfly Valves generally takes time to determine their electrical parameters, mainly electric power, rated current, secondary voltage control loop, are often negligent in this regard, the results of control system and the electric actuator parameter does not match the space-time caused by the work of opening trip, fuses, fuse, thermal overload relay protection is like a take-off and other failures.

根据所选电动执行器确定电气参数因不同电动执行器厂家的电气参数有所差别,所以设计选型时一般都需确定其电气参数,主要有电机功率、额定电流、二次控制回路电压等,往往在这方面的疏忽,结果控制系统与电动执行器参数不匹配造成工作时空开跳闸、保险丝熔断、热过载继电器保护起跳等故障现像。

In this paper, with an original designed tool and selected welding parameters, 2024-T4 aluminum alloy sheets were friction stir welded successfully. A series of weld experiments were performed; the microstructure and the mechanical properties of the joints were analyzed. The influences of the welding parameters upon the quality of the joints were studied. The optimized welding parameters window was obtained in which high quality joints can be made and the tensile strength of the optimized joints were more than 80% of that of parent metal. The residual stresses of FSW joints have been investigated by using the Hole-drilling method.

本文自主设计搅拌头,通过选择合适的工艺参数,成功实现了硬铝合金2024-T4板材搅拌摩擦焊接;通过对接头成形和微观组织的研究得到可以实现焊接的工艺参数范围和工艺参数对接头成形的影响规律,并结合接头力学性能研究形成了接头性能与工艺参数之间的关系,并据此建立了优化工艺参数窗口,优化工艺参数下接头的抗拉强度可达到母材的80%以上。

In the process of back analysis, the orthogonal experiment is used to design 27 kinds of the schemes of numerical simulation. The optimum scheme of parameters which are composed of the rheologic parameters of rock layer, thin double-layer and other sensitive parameters is obtained by analyzing the orthogonal experiment results.

在反演分析过程中,运用正交试验方法,设计了27种数值模拟方案,通过正交试验设计的直观分析,获得了洞室顶板岩层与薄夹层的流变参数和其他敏感参数的最佳组合方案。

In this paper, based on the water balance equation, infiltration parameters from advance and runoff model method was used to estimate the soil permeation parameters of Kostiakov-Lewis equation in furrow irrigation, according to a set of field furrow irrigation data to estimate the parameters, and utilizing WinSRFR1.1 software to simulate the water flow in furrow irrigation.

该文以水量平衡方程为基础,采用IPARM方法建立了沟灌Kostiakov-Lewis入渗方程中参数的估算方法,并根据一组田间实测沟灌资料对入渗参数进行了估算,利用WinSRFR1.1软件对沟灌水流运动进行了模拟。

According to the practical characteristics and parameters during hot finishing rolling process of aluminium alloy JP1235, a three-dimensional thermo-mechanical coupled elastic-plastic FEM model was established with the software Marc. And this model was used to simulate the rolling state of F1 stand without back tension. The lateral distribution of rolling force、contact friction force and other mechanic parameters were calculated. Meanwhile, simulated the rolling state considering the influence of mill tilt, and studied the distribution of the mechanics under this state, discussed the effect of mill tile on mechanic parameters and strip steering, which can provide some reference to steering control strategy.

根据JP1235铝合金板带热精轧过程的实际工艺特点和工艺参数,采用非线性有限元软件Marc,建立一个三维热力耦合弹塑性有限元模型,模拟了精轧机组第一机架(F1机架)失去后张力作用后的轧制状态,计算出轧制过程中轧制力、摩擦力等力能参数沿板宽方向上的分布情况,在此基础上,模拟初始轧辊倾斜影响下的轧制状态,并对该轧制状态下的力能参数分布情况进行研究,探讨轧辊倾斜对力能参数分布及跑偏规律的影响,为纠偏控制提供了一定的理论依据。

When proceeding pump testing, we collect a good many parameters, and figure out the pump gross head, pump shaft power, NPSH and other parameters. Different units of those parameters are used in different countries, and sometimes the customer asks for the test data of special media. Making a test of every medium of the same pump is not realistic, and the costs will be increase, so we convert the units of the data, and figure out the testing data according to different customer's special requirements. We reduced costs and got good remarks from the corporation through the application of unit conversion technology.

水泵试验时,要采集诸多参数,并且根据这些参数计算出扬程、轴功率、NPSH等数值,不同国家这些参数采用的单位不同,企业必须能够按照客户要求的单位提供试验数据;并且有时客户要求得到水泵在特殊介质下进行试验得出的试验数据,同一台泵在每种介质下都做一遍试验不太现实,而且会提高企业的生产成本,提出将采集的数据进行单位换算,根据不同国家或者客户的特殊要求求出泵的试验数据,在实际应用中节省了试验成本,得到了企业的好评。

Expressions used to pass var and out parameters must be identically typed with the corresponding formal parameters, unless the formal parameters are untyped.

用于传递 var 参数和 out 参数的表达式,其类型必需与相应形式参数的类型等同,除非形式参数是无类型的。

The parameters optimization design model is proposed, which is based on a control model with the quasi-Euler angle, Euler angle velocity and absolute angular velocity as the feedback. The vibration-resistance parameters of the given controller are chosen as the optimization variables, and the on-off times of the engines is chosen as the optimization objective function.

基于一类采用拟欧拉角、拟欧拉角速度和飞行器绝对角速度为反馈信号的姿态机动控制模型,以其消振参数为优化变量,开关次数为优化指标,建立了姿态机动参数优化模型。

This method is independent from flow data, having fast rendering rate and high contrast output image. The parameters have obvious physical meaning, and different vision effect visualization output results are derived from different parameters combination. This method can take full advantage of the graphic card accelerator, and has successful application in the dynamic visualization of the flow data in crystal growth experiment during task research work.

该方法具有独立于流场数据、绘制速度快、生成图像对比度高的特点,参数物理意义明显,不同参数选择可得到不同视觉效果的可视化输出结果,能够充分利用现有硬件图形显示加速设备,已经被成功应用于空间晶体生长实验流场数据的可视化,获得了较好的效果。

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推荐网络例句

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难,表现为纤维组织坚韧,游离肺动脉非常困难;徒手无法松解左、右纤维三角,肺动脉和主动脉根部的游离非常困难;心肌纤维坚硬、质脆,解剖时容易断离成碎块,无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。

MILAN - The team has left for the States at 10.15am CET from Terminal 1, Milan Malpensa airport. The Rossoneri will land in New York at 12.50am local time (6.50pm CET), after a nine-hour flight.

米兰—球队在上午10:15从米兰马尔朋萨机场第一登机口登机,出发前往美国,预计于纽约时间上午12:50降落(意大利时间下午6:50),飞行时间大约9个小时。