氦

The reason is that the population of the ground state descends and the population of the first-excited state increases in the two-color coherent lase relative that in the monochromic laser and the transition channel of the electron to the even-parity continuum

氦离子在添加倍频光的双色场作用下高次谐波产生效率极大提高的原因是：倍频光极大地加快了电子电离到连续态及返回基态这一过程，使辐射出的高次谐波光子数大大增加，该初步阐释可为高次谐波真正应用到实际中提供一些理论启示。

Based on the noise theory and experi mentation ,the author founded the onli ne method to test current noise , validated the relation bet ween te mperature ,aperture and pressure with current noise .This paper firstly analyzed gener— ati ng mechanis mof discharge niose ,studied the measure and factor of discharge niose ,i ndicated an effective method for degradi ng the discharge noise ,which pro moted the performance of laser gyro fro m0.01°／h to 0.001°／h.

文中以氦氖气体激光器的噪声特性理论为指导，以试验研究为基础，建立了在线噪声电流测试方法，通过试验验证了温度、腔体毛细孔径、谐振腔充气气压等参数与放电噪声的关系，首次提出了放电噪声产生的机理，分析了电流噪声的检测方法及影响因素，给出了减小和抑制放电噪声的有效方法，使得激光陀螺的性能由0.01°／h 提高到0.001°／h。

In recent years, based on the rich experiences [1,2] acquired from cryocare surgery system, the author adopted argon plasma coagulation for the treatment of central lung neoplasma with airway obstruction.

近年来，作者采用氩氦刀治疗肺癌已取得丰富经验[1，2]，近来又采取氩等离子体凝固术治疗气道内肿瘤，取得非常好的疗效。

The combination of NB-UVB Phototherapy and He-Ne User is an effective and safe method for treating Herpes Zoster and can reduce the incidence rate of lingering effects of nerval pain.

窄谱中波紫外线联合氦氖激光治疗带状疱疹疗效高，安全性好，并可减少后遗神经痛的发生率。

Alidase was prepared by coupling silica-gel spheres already carrying γ-aminopropyltriethoxy-silane with glutaraldehyde, and then with N-(p-aminophenyl) oxamic acid.

将γ氦丙基三乙氧基硅烷取代的微球硅胶先后与戊二醛，对氨基苯草氨酸结合，制成了一种新的吸附剂，用于唾液酸酶的亲和提纯。

Methods:11 cancer pain patients with retroperitoneal metastatic tumor were treated by percutaneously cryoablation guided by computer tomography.

11例腹膜后转移瘤导致腹痛患者在CT引导下行氩氦刀冷冻治疗。观察患者治疗后1、4周疼痛状况及止痛药用量情况及生活质量状况。

Effects of He-Ne laser irradiation on vascular endothelial cell growth factor R-2 expression in periodontium of tooth movement in rabbits.

氦氖激光照射对兔正畸牙周组织中血管内皮细胞生长因子受体-2表达的影响。

A single-stage and high power pulse tube cooler working between 20~40 K has been designed and constructed in order to precool the second stage of a 4 K separate two-stage pulse tube cooler.

为了满足液氦温区分离型二级脉管制冷机第二级预冷的需要，设计制作了1台20～40K温区单级大功率脉管制冷机。

M3. In the cause of the experiments, the divers breathed helium-oxygen mixture from HJ-801 diving apparatus and temperature was scored for the divers' recta, body surface and surrounding environment.

为了研究低水温潜水对人体生理与安全减压的影响，作者进行了深度为60一120m、水温在巧。0一19 。0℃的低水温环境人体潜水试验，潜水员穿湿式潜水服，呼吸氦氧混合气。

Thermal-hydraulics design and analysis have been investigated by RELAP 5 code, and pipe optimization, equipments layout and stress analyses have been finished by CAESAR code.

介绍了拟建的高温高压氦气实验回路的主要目标、特征以及回路中各设备的性能、参数，应用RELAP5程序完成了回路的热工设计分析，CAESAR程序优化了管路和设备的布置及应力分析，结果表明设计具备工程可行性。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。