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Highly flammable substance made from cellulose nitrate and camphor; used in e.g. motion-picture and X-ray film; its use has decreased with the development of nonflammable thermoplastics.

极易燃烧的物质，用硝酸纤维素和樟脑制成，用于电影胶片和x光胶片中，由于不可燃烧的热塑性塑料的发展，已减少使用。

Hundreds of other x-ray sources—stellar black holes and neutron stars—also inhabit Centaurus A.

数百个其它放射线的来源――是恒星黑洞群和中子星座――同样位于人马座A部位。

Hundreds of other x-ray sources—stellar black holes andneutronstars—also inhabit Centaurus A.

数百个其它放射线的来源──是恒星黑洞群和中子星座──同样位于人马座A部位。

The X-ray crystal structure reveals that thiourea coordinates with Pd via S atom,and the complex as a whole was in complete symmetry with palladium atom at the symmetry center of the plane square structure.

硫脲是有效反萃剂，从萃合物的晶体结构看出，硫脲通过S原子与Pd配位，萃合物以Pd原子为中心构成平面正方型结构。

The development of modern computer imaging process makes it possible to solve this problem, and the development of digital X ray radiography technique put s forward an urgent demand for computerized automatic measurement and analysis system of cephalometry.

现代计算机图像处理科学的发展，使得这一问题的解决成为可能，而数字化X线摄影技术的发展，对开发全自动计算机头影测量分析系统提出了迫切的要求。

Key words: skeletal class III malocclusion; X-ray cephalometry; hard and soft tissue

关键词］骨性III类错牙合； X线头影测量；软硬组织

Methods The appliance was used on 15 adult subjects with Angle Ⅲ malocclusion and then compared clinical character and X-ray cephalometry before and after treatment.

矫治成人患者15例，进行临床表现及相关硬组织测量。结果：固定反式TBA戴用4个月后下颌明显后退。

MethodsThe appliance was used on 15 adult subjects with Angle Ⅲ malocclusion and then compared clinical character and X-ray cephalometry before and after treatment.

矫治成人患者15例，进行临床表现及相关硬组织测量。结果：固定反式TBA戴用4个月后下颌明显后退。

It is found by X-ray diffraction that the solution of Sm2O3 and Gd2O3 in ceria for the samples sintered in the range of 1 400─1 550 ℃ is better, but for the sample sintered at 1600 ℃, a new phase is formed with the reduction of lattice constants.

X射线衍射分析发现：对1 4001 550 ℃烧结的样品，Sm2O3和Gd2O3固溶较好﹔但对1 600 ℃烧结的样品，有新相生成，同时晶格常数减小。

Glass-ceramics of CaO-Al2O3-SiO2 system doped with ceria were prepared by sintering method and were characterized by differential thermal analysis, X-ray diffractometry, scanning electron microscopy and property measurements.

采用烧结法制备添加氧化铈的CaO-Al2O3-SiO2系微晶玻璃材料，并对其进行差热分析、X射线衍射分析、扫描电镜观察和性能测试。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。