比较仪

Experiments that use single-pulse laser to ablate small steel ball in atmosphere were conducted.

采用单脉冲激光进行了大气环境下激光烧蚀小钢珠实验，得到其推进效应参数，发现并分析了钢珠在不同放置位置时不同的物理现象；为了得到一系列定量实验数据，采用自行研制的激光冲量靶仪进行了单脉冲激光烧蚀推进效应实验测试，得到了不同环境条件、不同靶材料的激光推进效应参数，并与国外的实验数据以及数值计算结果进行了比较。

The experimental setup for the turbulent jets in crossflow is designed, and the hot wire anemometry IFA 300 is used to measure the velocity field and the turbulent kinetic energy, and the computational result matches experimental measurement reasonably well. The experimental result is very important in the analysis of the flow field, deduction of the equation of the jet trajectory, check of the turbulence model and validation of the numerical method.

首先，建立了用于测量横向紊动射流的实验台，并利用IFA 300型热膜风速仪系统测量了多种工况下的流场，并将速度、湍动能结果与数值计算结果进行了比较，实验结果与数值模拟结果吻合较好，从而为分析流场特性、确定射流轨迹、比较湍流模型以及验证数值计算方法提供了依据。

Therefore it is necessary to research the mechanism of greensand used for high compacted molding methods thoroughly.This subject is one section of the National Natural Science Foundation subject ""Ivestigation on Predicting Method and Mechanism of Springback for High Compacted Sand Molds"", followed of the other completed one named ""Research on Microdeformation of Molding Sand"". A serious of experiments has been done on the reequipped three axial machine under certain technological conditions, and the mechanics, material science, rheologic science. It is systematically studied that the influences on the springback of sand mold were caused by the main influence factors: pressure, compacted rate and the content of soil. Through the analyzed experiments' data, the experienced stress-strain relationship concerning the main influence factors were obtained;under different technical parameter, the springback and spingback's potential energy are compared, the differences and indifferences between them are found out, and the springback's mechanism is discussed;according to the tests' data of YangGuoping coming from Tinghua University, experienced formula of molding sand's springback displacement is induced, the displacement and springback are compared, the margin of error's reasons are analyzed, and they are tested and verified mutually.

本课题为国家自然科学基金项目"高紧实度砂型预测方法及回弹机理的探讨"的一部分，是已结题的国家自然科学基金项目"铸造型砂微变形的研究"的后继，运用力学、材料学及流变学理论，利用改装的三轴仪，在一定的工艺条件下，作了大量系列实验，系统的研究了压实比压、紧实率和膨润土含量对砂型回弹的影响；对实验数据进行了分析和处理，得出了型砂关于压实比压、紧实率和膨润土含量的本构关系的经验公式；把各工艺参数下的型砂产生的回弹量与回弹势能进行比较，找出两者存在的异同点，并对回弹机理进行了探讨；通过清华大学杨国平的实验数据，推导出型砂回弹位移场的经验公式，并与实验测出的回弹量进行比较，分析误差造成的原因，并互相进行了验证。

The simple elastic-perfectly plastic Tresca model is modified to allow for the above mentioned effects based on the finite element software ABAQUS. Then the numerical simulations for penetration resistance mechanism of T-bar penetrometer in soft clay are conducted.

在大型有限元软件ABAQUS平台上进行二次开发，针对基于Tresca屈服准则的理想弹塑性模型进行了相应改进，使之可以比较合理地反映上述因素的影响，进而对软土中T型触探仪的贯入机制进行了比较系统的数值分析。

The above-mentioned T8 glass-ceramic showed only 25 % decrease in IR transmittance, 17 % increase in hardness, 61 increase in dilatometric softening point, and 19 % increase in Young s modulus.

上述试片之IR穿透率与T8起始玻璃比较，仅下降了25 %，但硬度上升了17%；与未添加成核剂的玻璃比较，膨胀仪软化点上升约61℃，杨氏系数上升约19 %。

The resistance to extension, freezable water and microstructure were determined by extensograph, differential scanning calorimetry, and scanning electron microscopy of control dough and the dough with ASK gum and with locust bean gum after 1, 2, 3, and 4 weeks frozen storage.

采用拉伸仪、差示扫描量热仪、扫描电镜分别测定了空白面团(未添加任何胶体的冷冻面团)和添加沙蒿胶面团在冷冻储藏1、2、3、4w后抗拉伸性能、可冻结水含量以及微观结构的变化，同时比较了添加沙蒿胶和刺槐豆胶后上述参数的不同。

The paper determines compaction degree of subgrade making use of pumped sand, cutting ring ,nuclear density instrument and drop hammer frequent mensuration methods.

采用灌砂法、环刀法、核子密度仪法、落锤频谱式快速测定仪法4种方法对检测路基压实度的测试结果进行了比较分析；并以灌砂法作为现场测定压实度的标准方法，将其他方法与灌砂法进行回归标定，得出了相关关系，进一步证实了采用灌砂法作为路基压实度检测的标准方法是值得推广的。

The article compares the use condition of the four yarn abraders, and analyses the test results related to them.

对四种纱线耐磨仪的测试结果进行相关性分析，比较四种纱线耐磨仪的使用情况。

When coal combusts in bomb, temperature of measuring system will change. Through analysis and comparison graphs of temperature, we can see that they differ from each other with the variation of coal ingredient and there is a flexion in it.

通过恒温式氧弹仪热容量标定和标准热物质发热量测定的试验，确定了比较合适的冷却校正计算的时间间隔，对于提高恒温式氧弹仪测定的准确性有所帮助。

Therefore, by comparing particle distribution of the spraying under different water pressure, and the nozzle's outlet velocity simulation get by Ansys, which is a software for mechanical simulation, a proposal of the application of 1.5mm nozzle, 8Mpa water pressure on the spot was put forward.

在比较多种光学测粒仪的基础上，选择Winner313系统测量不同孔径喷嘴在不同供水压力下喷雾雾场的粒径分布。通过分析比较喷嘴在不同压力下喷雾雾场的粒径分布和Ansys模拟得到的喷嘴内部及出水口速度场，建议现场应用1.5mm喷嘴、供水压力为8MPa进行喷雾。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。