查询词典 liquid compass

In this paper, nanopowders of rare earth oxides and tungsten were prepared and 0-3 type nano-composit rare earth tungsten thermionic emission materials were fabricated with novel technics. The raw material selection, preparation technic parameter, structure, physical and chemical characteristic, the rare earth distribution and the emission behavior were studied. The influence between the active layer and the thermionic emission performance, rare earth elements diffusion and distribution along depth were investigated in detail. The surplus RE formation and the electron transfer were discussed in theoretically. The thermionic emission current density of the single surplus RE on the active layer was educed. We adopted "liquid-liquid mixing, freeze-drying and two stage-reduction" working step firstly to produce the RE-W nanopowders including La-W powder, Ce-W powder and Y-W powder.

本文采用细化显微组织的新工艺，制备了纳米稀土钨粉末和0-3型纳米复合稀土钨热电子发射材料，探讨研究其原料选择、制备工艺及参数、结构特征、物理和化学特性、稀土分布均匀性、以及热电子发射特性；系统研究了稀土元素的高温扩散情况、高温状态下活性层中稀土的纵向深度分布、以及表面活性物质和活性层厚度对热发射性能的作用；从理论上分析阐释了超额稀土的形成及其电子的传递过程；并从理论上推导了活性层中单个超额稀土的热电子发射电流密度。

In this case the University of Southampton Professor Martin Thew and his colleagues began a liquid - liquid hydrocyclone technology.

在这种情况下Southampton大学的Martin Thew教授及其同事开始了液-液旋流分离技术的研究。

A new method of removing thiol from RFCC naphtha by liquid-liquid extraction using aqua ammonia was introduced.

提出了一种重油催化裂化汽油氨水液-液脱臭新方法。

In order to lower the Δn value and obtain broad mesophase range, new negative dielectrics anisotropy liquid crystal compounds 4a and 4b were designed by replacement a phenyl ring with a cyclohexyl ring in the common tolane liquid crystals.

为降低液晶分子的双折射率并获得宽液晶相区，用环己基替代传统二苯乙炔液晶分子中的一个苯环，得到一类结构新颖的含乙炔桥键的负介电各向异性液晶分子4a， 4b。

Is located in Taiyuan set of state-level Hi-tech Development Zone Branch Trade and Industry as one of the high-tech enterprises, are engaged in scientific research, development, production flow meter, pressure, liquid level transmitter and a variety of Smart Display Totalizer Miriam professional enterprises, while engaged in the flow, pressure, liquid level and other physical measurements, sets of automated control of the professional enterprise.

太原市天同测控技术有限公司是入驻太原国家级高新技术开发区的集科工贸为一体的高新技术企业，是从事科研、开发、生产流量仪表、压力、液位变送器及各种智能显示积算仪的专业企业，同时从事有关流量、压力、液位等各种物理测量、成套自动化控制的专业企业。

The mass transter can be enhanced ,when we introduce sulfuric acid and cuprous oxide into this system.The model is formed to describe the transference of the martial between the four phases: gas-liquid-liquid-gas, which can explain some problems. We analyze the dead of the catalyst, and make a conclusion that the surface of the catalyst is covered with some compounds such as bluestone, which lessen the activity points of the catalyst and debase the activity.

在SO_4~(2-)／ZrO_2-La_2O_3催化的反应系统中加入稀硫酸和氧化亚铜促进了异丁烯和一氧化碳的传质、使反应得以快速，高选择性的进行，异丁烯的转化率达95％以上，特戊酸的收率达47％；讨论了g-l-l-s传质过程；对催化剂作了失活分析，催化剂失活的原因是因为反应后的催化剂表面覆盖了一层硫酸盐，使催化剂的活性中心数减少，活性降低。

Magnetic stripe to liquid or magnetic materials for the information carrier, Tu Fu in the liquid magnetic material on the card or the magnetic stripe width of 6-14 mm pressure affixed to the card.

磁卡以液体磁性材料或磁条为信息载体，将液体磁性材料涂复在卡片上或将宽约6-14mm 的磁条压贴在卡片上。

As the centre of liquid-rocket-engine, the importance of the liquid hydrogen turbopump is significant. Turbopump rotordynamic instability problems concern many influencing factors, and there is great difficulty in solving them.

作为液体火箭发动机的心脏，液氢涡轮泵的重要性不言而喻，其中涡轮泵转子系统的动力稳定性问题中涉及的影响因素很多，其分析研究的难度也极大。

This method makes the best of the advantage of binary optics and liquid crystal-spatial light modulator. It can avoid the unhandy of binary optics and the low efficiency of liquid crystal-spatial light modulator according to the demand. It optimizes temperature uniformity system.

该方法主要是充分利用二元光学法和液晶空间光调制的各自优点，并按照设计系统的要求，最大程度避免二元光学法使用不灵活而液晶空间光调制激光能量利用率不高的缺点，实现温度分布均匀化系统优化。

By manufacturing the two cylindrical resistor tubes in the liquid groove of the conducting electricity, the variable of the liquid-surface height is linear to the variable of the cylindrical resistor tube.

摘 要：论述倾斜度测试仪的测量原理，提出在导电液体槽中制造两个圆柱形电阻管，这样可以把圆柱形电阻管液面高度的变化量线性地转换成圆柱形电阻管电阻的变化量。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。