查询词典 double-entry system

The technical difficulties in automatic control in the after-treatment of special steel products have been overcome by using double cross ratio burning control solutions. The above said system has reached the leading level in China.

这种情况下就需要使炉内温度在一定时候处于升温状态，一定时候处于保温状态，即根据加热的钢锭所要求的温度及所需要的时间来进行控制，同时保证炉内的压力，防止钢锭吸热过度导致废钢。

In basic aqueous system, large single crystal of 〓and 〓 were obtained, it wasthe first time that the double salt 〓 was synthesizedfrom aqueous solution.

在碱性条件下，首次合成了以质子化的有机胺为阳离子的无水偏钒酸盐单晶〓；首次以水热法合成了无水偏钒酸盐复盐〓单晶。

In the complex system of MeSO4, the removal of Ca2+ and Mg2+ by fluorination precipitation and double salt precipitation deep purification process was studied by single factor method.

分别以浸出液和氟化沉淀液为原料，采用单因素法对复杂MeSO4体系氟化沉淀除钙镁和复盐沉淀深度净化进行了研究。

In this paper, a novel synchronization acquisition approach using the early-late gate for FFH/BFSK system is proposed, and it is based on frequency-PN sequence double pattern. Analytical and numerical results show the following advantages: the decision of threshold is more simple and accurate, and it overcomes the unreliableness of one-hop data demodulation, the unreliableness is caused by the not-alignment hop window of transmitter and receiver.

摘要针对FFH/BFSK系统的同步难题，该文提出了一种基于频率和PN序列双图案的早迟门同步捕获方法，理论分析和仿真结果显示，该方法门限的选择更为简单、准确；克服了全跳解调时由于收发窗口未同步引起的解调不可靠性。

Senior engineer and owner of several types of high-quality professional and technical personnel and excellent production team; the company has strong technical strength, advanced production equipment, to meet the market needs, our company in order to struggle, pioneering and innovative spirit of indisputable quality, creating brand , improve the quality and establish a complete quality management system, advanced detection means, quality service degrees, in the same industry enjoys a high reputation, our company produces glass double straight edge milling machine series products have been internally outside users and praise.

拥有高级工程师数名及各类高素质的专业技术人员和优秀的生产团队；本公司技术力量雄厚，生产设备先进，为适应市场需要，我公司以拼搏、开拓、创新的精神争优质，创品牌，提高内在质量并建立了完整的质量管理体系，以先进的检测手段，优质的服务度，在同行业中享有较高的声誉，我公司生产的玻璃双直边磨边机系列产品已得到国内外用户的好评和赞誉。

Series 774 Double Check Valve Assemblies are designed to prevent the reverse flow of polluted water from entering into the potable water system.

系列747双止回阀总成用于防止污水回流进入饮用水系统中。

Double shift rotation system is suitable for both opening and skylight-opened modes.

双转轴转向系统适用于敞蓬和打开顶蓬两种模式。

Washery system of 300 days of work a day, producing a double shift (16 hours), a group of maintenance.

选煤厂工作制度工作300天，每天二班生产（16小时工作），一班检修。

In this thesis, terahertz transmission properties through three kinds of simple sub-wavelength metallic structures, including single sub-wavelength metallic circular hole, single sub-wavelength metallic slit and double sub-wavelength metallic slits, are experimentally investigated in the far field by using our own THz time-domain spectroscopy system and are theoretically analyzed. Conclusions are obtained as follows:(1) a single sub-wavelength metallic circular hole exhibits the same terahertz transmission properties as that of round metallic waveguide, which are influenced by the diameter of circular hole and the thickness of metal foil.

本文利用本实验室搭建的太赫兹时域光谱系统研究了太赫兹波段金属亚波长结构的透射特性，其中对三类金属亚波长简单结构即单个金属亚波长圆孔、单个金属亚波长狭缝和金属亚波长双缝的太赫兹透射现象进行了远场探测以及理论上的分析，得到了以下一些成果：(1)太赫兹波通过单个金属亚波长圆孔的传播现象与圆形金属波导具有相同的规律，其特性受到圆孔直径和金属箔厚度的影响。

The principle, design and implementation of the double channel 100MHz high speed data acquisition system have been discussed.

3讨论了双路100MHz高速数据采集系统的工作原理、设计思路和实现方法，并独立完成了系统的工程实现。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。