查询词典 gas

Compared with the low absorption efficiencies of a gas of atoms and molecules (less than 10%), it is demonstrated experimentally that a gas of clusters has much higher absorption efficiency. The absorption efficiencies to the laser energy are as high as 90% and 50% for rare gas clusters and hydrogen clusters, respectively.

实验发现，相对于原子或者分子气体喷流对激光的低吸收效率（小于10％），惰性气体团簇喷流和氢分子团簇喷流对飞秒强激光脉冲有非常强的吸收，吸收效率分别达90％和50％以上。

On the basis of the concept of perfect quantum gas, a physical model of extreme relativity is established for perfect quantum gas, and also according to the conclusions of the state density of the extreme theory of relativity, the densities of quantum statistics′ particle numbers and energy, the extreme relativity′s result of the enthalpy、internal energy and heat capacity of the perfect quantum gas is obtained under the high temperature by strict theory inference.

在理想量子气体概念的基础上，首先建立极端相对论理想量子气体的物理模型；再根据极端相对论的态密度和量子统计的粒子数、能量的密度结论，通过严格的理论推导，得出理想量子气体在高温条件下的极端相对论性的焓、内能和热容量的结果，并将其热容量与高温条件下的理想量子气体、经典理想气体的热容量对比，指出极端相对论与非相对论两种模型、理想量子气体与经典理想气体两种模型的热容量之间的差异，同时分析这些差异的物理原因在于各自气体模型的态密度以及对应体系的波函数的对称性；最后阐明高温条件下极端相对论理想量子气体的热容量在量子统计方面的先进性及应用前景。

Again, assuming a 1-D flow of a perfect gas, the, gas properties at any nozzle area ratio can be obtained by knowing a property of the gas called the ratio of specific heat capacities, or gamma.

再次，假设一维流动的一个完美的气体，气体性质在任何喷嘴面积比例可以得到知道的一个性质的气体所谓的比例，具体的供热能力，或伽玛项。

With the coming of peak period of our country's gas pipeline construction, how to use and perfect the Natural Gas Long Transportation Replacement Commissioning Technique to guarantee successful replacement of natural gas transmission line has increasingly become a focused problem.

随着我国输气管线建设高峰期的到来，如何利用和完善&天然气长输管线置换投产技术&保证输气管线顺利投产已成为人们日益关注的问题。

With reference to the reservoir conditions, the oil and gas can be trapped not only in the anticline and fault block of the reservoir, but also in the lithologies that can form a great scale of oil and gas field. The study of the lithological oil and gas reservoir enables the seismic lithological theory and especially the AVO technique to take great progress

石油、天然气的储集条件说明：油气不仅能保存在储集层背斜、断块等一类正向圈闭中，也能在具备有储集条件的岩性体中聚集起来，并成为相当规模的油气田，对岩性油气藏的研究，使得地震岩性学特别是AVO技术得到了发展。

This invention discloses one lithium ion battery anode materials, which is made by following steps: a, mixing lithium salt, microcosmic salt and ferrous oxalate for grinding with mole proportion as one to one to one; after drying under nitrogen gas protection in 300-400DEG C for heating for five to eight hours; b, adding addictive agent into the mixture with weight proportion as3-10:1; c, bursting the mixture gas under inertia gas protection under temperature of 500-800DEG C for 10 to 24 hours; d, adding the product into crucible with active carbon 10 to 40 g and adjusting the microwave frequency into 140 to 700 W with control time as 1 to 14 minutes.

本发明公开了一种锂离子电池正极材料，由70-90wt％的LiFePO 4 和10-30wt％的碳组成，按照以下步骤制备：(1)将锂盐、磷盐和草酸亚铁混合球磨，所述锂、铁和磷元素的摩尔比为1∶1∶1，干燥后在氮气保护下300～400℃预热5～8小时；(2)在上述的混合物中加入添加剂，所述混合物与添加剂的重量比为3～10∶1；(3)将步骤(2)得到的混合物在惰性气体保护下，进行焙烧，焙烧温度为500～800℃，焙烧时间为10～24小时；(4)将焙烧后的产物压片，放入装有活性炭10～40g的坩锅，再将坩锅放入微波炉中，微波功率调至140～700W，控制时间为1～14分钟。

This paper designs one kind of mineshaft portable gas detector in view of the present situation, when the gas gas density approaches the dangerous value, automatically sends out reports to the police, the reminder mineshaft personnel leaves immediately.

本文针对目前情况设计一种井下便携式瓦斯探测器，当瓦斯气体浓度接近危险值时，自动发出报警，提醒井下人员立刻离开。

Yancheng natural gas pools have the tendency of gas and water upsidedown,and are characterized by alternate low abnormal pressure and hydrostatic pressure,long well section and low gas production rate.

盐城凹陷天然气藏具有气水倒置趋势、低异常压力与静水柱压力交替出现、含气井段长且产气量低的特征。

The diamond film deposition experiments with hot cathode glow discharge PCVD shows that the cathode temperature has no apparent influence on deposition rate and film quality. With the increase of gas pressure, the gas density, electron temperature, gas dissociation rate in the plasma region change differently.

在热阴极辉光放电PCVD沉积金刚石膜中，适当的阴极温度是保证大电流、高气压辉光放电稳定工作的必要条件，它影响着辉光放电阴极位降区的放电性质，但对金刚石膜的沉积速率和膜品质基本没有影响。

On July 13, Gazprom, the Russian state-controlled gas company, and Total, the French oil and gas major, announced they had signed an agreement to co- operate in developing the Shtokman gas field in the Russian waters of the Barents Sea.

7月13日，俄罗斯政府控股的俄罗斯天然气工业股份公司与法国石油天然气巨头道达尔宣布，双方已签署了一项协议，合作开发位于巴伦支海俄罗斯海域内的什托克曼气田。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。