研究试验

In this paper, based on the specific CNG engine parameters and characteristics, the influence of the injection timing, ignition energy and lean combustion for the engine is tested, in order to explore the control rules of fuel injection, ignition energy and lean combustion and then draw the following conclusions: small injection advance angle of electronic controlled injection CNG engine is optimum

文章根据天然气发动机的具体参数和特性，探索电控喷射CNG发动机在燃料喷射、点火能量和稀燃等方面的控制规律，确定最优的控制参数，开展了喷射定时、点火能量及稀薄燃料等参数对发动机性能影响的试验研究工作，并根据试验结果分析，得出了以下结论：电控喷射WT615CNG发动机燃料喷射提前角要小些为宜

A quantitative measurement method for the space intersection angle of a three-line mapping camera is put forward in a thermal-optical environment test after studying the measuring principle of the intersection angles and designing a new measuring system.

对三线阵测绘相机热光学试验交会角测试机理进行了研究，设计了试验测试系统，提出了一种空间交会角定量测量方法。

Lastly, experimentations are carried out on Chaochai 6102BQ engine and the data of the thermal parameters according to different oil-apply lead angle is derived. The influence of the change of oil-apply lead angle on the rate of heat release is researched, then a reference is provided for building an accurate heat release model.

最后，在朝柴6102BQ柴油机台架上进行了试验，对不同供油提前角下柴油机的热工参数进行实机测试，对试验结果进行了处理、分析，研究了供油提前角的改变对放热规律的影响，为建立该故障下的燃烧放热模型提供参考。

First, in the composite hypothesis testing, circular dispersion error which is more practicable than horizontal and vertical error is used to discuss some problems of the dispersion of impact points; and the critical area of decision in the dispersion problem is analyzed; the specific expression of Bayesian risk is worked out, which ameliorates the method that only can get the approximate solution by calculating numerical integration.

由此，本文主要应用Bayes方法对以下几方面进行了探讨：首先，在复杂假设下，本文利用圆散布误差这一精度指标对落点散布鉴定问题进行研究，它比以往所用的纵、横向偏差精度指标更具现实意义；分析了此鉴定问题的决策临界区域；给出其Bayes风险的具体表达式，对用数值积分进行近似求解的方法进行了改进；在此基础上，通过极小化试验的风险确定最优试验数n，并讨论了决策中犯两类错误的概率，给出了验前信息的表示。

To verify the accuracy of models for temperature analysis,an arched stress...

为检验模型的准确性，试验研究了弓形应力框试验铸件的浇注过程。

The mechanical properties of argil fly-ash concrete and effectiveness of its application to abutment-backfill are investigated by material experiment, centrifugal modeling test and numerical calculation.

通过材料性能试验、土工离心模型试验和数值计算，研究陶粒粉煤灰混凝土的物理力学性能及其在桥涵台背回填的应用效果。

Methods The Ames test, micronucleus test and comet assay were used to detect the genotoxicity of bactericide flutriafol.

应用Ames试验、小鼠骨髓嗜多染红细胞微核试验、慧星试验研究粉唑醇的遗传毒性。

Results from the experiment on an EHD experiment bench show that condensation heat transfer in a horizontal tube responds strongly to the EHD technique

在电流体力学强化传热试验台上进行了水平管内凝结传热的强化试验研究，结果表明，EHD技术对水平管内的凝结传热有明显的强化效果

According to the standard test method recommended by RILEM, a systematic study on the effect of age and strength on fracture energy of concrete is carried out. Notched beam specimens are adopted in three point bending test.

本文依据RILEM推荐的标准试验方法，针对龄期和强度对混凝土断裂能GF的影响采用三点弯切口梁试件进行了系统的试验研究。

In order to determine the technological parameter of essential oil extracted from bitter almond by wet distillation,factors influenced the oil yield,such as hydrolysis time and temperature、distilling time、water adding amount and hydrolysis pH,etc.

为确定水蒸气蒸馏提取杏仁精油的工艺参数，以正交试验和单因素试验相结合的方法对影响杏仁精油提取率的水解时间、水解温度、蒸馏时间、加水量以及水解pH等因素进行了研究。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新