采用双相码高速传输水下声数据的一种方法

本文说明了利用单芯同轴电缆高速传输水下声数据的必要性,并给出了一种采用双相码的水下声数据基带传输方法,实验结果表明了该方案的优越性。     

“火”爆债务纠纷 铸成大祸坐牢

处理债务纠纷，本应清醒理智，通过正当的法律途径来解决，而犯罪嫌疑人朱某却走向极端。日前，涉嫌纵火的朱某已被许昌市魏都公安分局依法刑事拘留。     

干涉图象的数字处理

本文给出了一种基于干涉条纹的Zern(?)ke多项式拟合的干涉图象处理方法。详细论述了用Gram—schmidt最小二乘法进行Zerinke多项式拟合的原理。给出了两个进行Zernke多项式拟合的算法定理。文章还给出了一种实现波面的绝对求解的方法——三波面间接剪切法。     

B302Q触媒在我厂中变串低变中的应用

我厂是个年产15000吨合成氨的小氮肥厂,采用0.7MPa加压变换、加压碳化、32MPa合成的工艺。原变换选用中温催化剂B_(112)型,反应温度为450℃左右,变换气中CO含量为3.5％左右,吨氨变换气蒸汽消耗为1000kg左右。 为降低变换工段蒸汽用量,提高CO变换率,减轻铜洗负荷,实现稳产高产,于1990     

100m^3高炉冶炼低硅铁的实践

１９９６年３月安钢水冶铁厂在２＾＃１００ｍ＾３高炉进行了冶炼低硅铁试验，其低硅铁率达到５１．１７％，说明１００ｍ＾３高炉冶炼低硅是大有潜力可挖的。     

统计中的查找计数方法

本文以选票统计问题为例,讨论了3种查找计数方法(顺序法、二分法、插值法)在统计中的应用,提出了一种新颖的查找计数方法——一次到位法,给出了用FOXPLUS数据库语言编写的算法子程序,并比较了它们各自的特点和适用范围。     

SERT结晶器液位控制系统

介绍一种梅山冶金公司板坯连同上应用的新型的结晶器液位控制系统，它由浮式式液位检测装置，ＲＳＥ１０００控制器和电动塞棒执行机构所组成，由法国ＳＥＲＴ公司成套制造。     

Mensuration and simulation of mold filling process in semi-solid die-cast of aluminum alloy

To understand the flow trace of semi-solid slurry in mold cavity, some thermocouples were inserted in mold cavity, and the reaction timing of thermocouples showed the arrival of fluid. The filling time and rate were estimated by comparison between the experiment and calculation. The introduction of computer simulation technique based on ADSTEFAN was to predict injectionforming process and to prevent defects during trial manufacture of various parts. By comparing the formed appearance of parts in experiment and in simulation, and observing the relationship between internal defects inspected by X-ray or microscope and the flow field obtained in simulation, it was indicated that both have quite good agreement in simulation and experiment. Right predictions for cast defects resulted from mold filling can be carried out and proper direction was also proposed. The realization of numerical visualization for filling process during semi-solid die-cast process will play an important role in optimizing technology plan.