膨胀

In this paper, the application of thermostatic expansion valve in air conditioning system is introduced.

阐述了热力膨胀阀在制冷空调系统中的应用技术，结合热力膨胀阀的结构和工作原理，指出制冷空调系统的最佳稳定运行条件及热力膨胀阀的安装调试方法。

The results show that: the fillers of SiO_2 based investment consist of SiO_2,Al_2O_3 and MgO,and the binder is NH_4H_2PO_4;for SiO_2 based investment,the bulk density and the compression strength decrease,the apparent porosity and the thermal expansion increase,when the specimens are heated to 900 ℃;the fil.

结果表明：氧化硅系包埋料的骨料是氧化硅、氧化铝、氧化镁，结合剂为磷酸二氢铵，其900℃煅烧后显气孔率增加，体积密度下降，耐压强度降低，热膨胀增大；氧化铝系包埋料的骨料是氧化铝和氧化镁，结合剂为磷酸二氢铵，其900℃烧后显气孔率增加，体积密度下降，热膨胀变化不大；氧化镁系包埋料的骨料是氧化镁和氧化铝，结合剂是铝酸钙水泥，其900℃烧后耐压强度明显降低，热膨胀明显增大。

Matrix nutrition earthen bowl is put all right at was being pressed on October 18 go up in seedbed, what 1 ～ 2cm stays between every nutrition earthen bowl is interstitial, press every nutrition earthen bowl next self-prossessed the scale of 1.6 times water calculates 1 ～ total water requirement, cent is irrigated 2 times, removed 1 ～ 2 hours, earthen bowl of the nutrition after watering will be very fast bibulous spring back, expand complete hind, wait for earthen bowl of the nutrition that plunge into thorn with taper iron needle or bamboo autograph, the examination expands whether completely loose, if hard core still needs to continue to water, until expand entirely...

基质营养钵于10月18日按行摆放在苗床上，每个营养钵之间留1～2cm的空隙，然后按每个营养钵自重1～1.6倍水的比例计算总需水量，分2次浇入，间隔1～2小时，浇水后营养钵会很快吸水回弹，膨胀完全后，用尖细的铁针或竹签等扎刺营养钵，检查是否完全膨胀疏松，如有硬芯仍需继续浇水，直到全部膨胀。。。

This expansion is well supported by observations and is one of the foundations of the Big Bang Model. In the late 90's, observations of supernova[2] determined that not only is the universe expanding, it is expanding at an increasing rate.

宇宙的膨胀得到了观测的很好的支持，并且是大爆炸模型的基石之一。90年代后期，超新星的观测指出宇宙不仅在膨胀，而且在加速膨胀。

Then, through the expansion ratio and strength experiments of cement mortar, which early expansive admixture and laterexpansive admixture mix each other by different compound proportion, and according the analysis of results, reasonable compound proportions are pick out as the double expansive sources admixture that are fit for temperature shrinkage compensating of hydraulic mass concrete.

通过复掺实验，对比分析各种比例之间的膨胀特性和砂浆强度，选出适合补偿水工大体积混凝土温度收缩的比例，作为本次研究的双膨胀源膨胀剂。

Then, through the expansion ratio and strength experiments of cement mortar, which early expansive admixture and later expansive admixture mix each other by different compound proportion, and according the analysis of results, reasonable compound proportions are pick out as the double expansive sources admixture that are fit for temperature shrinkage compensating of hydraulic mass concrete.

通过复掺实验，对比分析各种比例之间的膨胀特性和砂浆强度，选出适合补偿水工大体积混凝土温度收缩的比例，作为本次研究的双膨胀源膨胀剂。

Based on the fact that the volumetric expanding coefficient of the amorphous macromolecule powder during glass transition process experiences a rapid change and by means of dilatometer technique,a new method of measuring the glass transition temperatures of amorphous macromo...

基于非晶态高分子粉体的体膨胀系数在玻璃化转变时发生突变的原理，采用热膨胀计技术，提出了一种用膨胀计测量非晶态高分子粉体玻璃化转变温度的新方法——膨胀计法，并建立了相应的测量装置。

Simulation experiments make sure that the dilatometer is able to detect the expansion changes in low temperature. The high temperature reheating process with dilatometer analysis indicate that the firing temperature are little higher than 900℃ for one sample and lower than 900℃ for other five samples with firing temperature ranges of 550~650℃, 650~750℃ and 750~900℃. The results from mineral composition analysis of the samples by X-ray diffraction provide further evidence of the reliability of the thermal expansion measurement.

模拟实验表明，所采用的热膨胀仪能适应低温法测温实验；用热膨胀高温法测出早期陶片中有一块样品原始烧成温度略高于900℃，其余5块样品皆低于900℃；通过热膨胀低温法较为准确地测出这五块样品原始烧成温度是分别介于550~650℃、650~750℃、750~900℃三个范围，而X射线衍射分析结果从物相成分的角度证明了测温结果的可靠性。

TEA expansive water repellent later expansivity ratio of restrict expansivityd

TEA膨胀防水剂；延迟膨胀；限制膨胀率

This research deals with the mechanical mechanism of expansion of steel slag sand mortar through the measurement of strength and expansion rate. The results indicate that the improvement of matrix strength could lower the expansion rate of steel slag sand mortar, extend the cracking age, reduce the degree of cracking but couldn't prevent the specimens made with steel slag from crack.

通过力学性能和80℃水热加速养护条件下砂浆棒自由线性膨胀率实验，结合SEM等微观测试技术，分析探讨了不同基体强度对钢渣砂砂膨胀行为的影响及水热养护不同龄期的力学性能与自由线性膨胀率的关系，从力学角度阐述了SSM膨胀破坏的机理。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。