发射物

The Roman ballista was powered by torsion derived from two thick skeins of twisted cords through which were thrust two separate arm s joined at their ends by the cord that propelled the missile.

希腊投石机基本上为一绑在基座之巨大的弩；罗马投石机使用绞扭力发射，以两束粗大绞索将强力弹臂之两端绞至并拢，然后弹射投掷物。

The Roman ballista was powered by torsion derived from two thick skeins of twisted cords through which were thrust two separate arms joined at their ends by the cord that propelled the missile.

希腊投石机基本上为一绑在基座之巨大的弩；罗马投石机使用绞扭力发射，以两束粗大绞索将强力弹臂之两端绞至并拢，然后弹射投掷物。

The Roman ballista was powered by torsion derived from two thick skeins of twisted cords through which were thrust two separate arms joined at their ends by the cord that propel led the missile.

希腊投石机基本上为一绑在基座之巨大的弩；罗马投石机使用绞扭力发射，以两束粗大绞索将强力弹臂之两端绞至并拢，然后弹射投掷物。

The Roman ballista was powered by torsion derived from two thick skeins of twist ed cords through which were thrust two separate arms joined at their ends by the cord that propelled the missile.

希腊投石机基本上为一绑在基座之巨大的弩；罗马投石机使用绞扭力发射，以两束粗大绞索将强力弹臂之两端绞至并拢，然后弹射投掷物。

Name of appearance of the chemical composition that determined all sorts of synthesis outcome according to chemical analysis and XRD analysis data, substance, lens of report of use emissive scanning is calcic to 6 kinds of boric acid microscopical form appearance, grain size undertook token, those who discover them is microscopical form appearance, grain size has very big different.

根据化学分析和XRD分析数据确定了各种合成产物的化学组成、物相名称，用场发射扫描电镜对六种硼酸钙的显微形貌、颗粒大小进行了表征，发现它们的显微形貌、颗粒大小有很大的不同。

Chromophoric dissolved organic matter; excitation-emission matrix fluorescence spectroscopy ; fluorescence; absorption; sediment pore waters; photodegradation

有色溶解有机物；荧光激发-发射矩阵光谱；荧光；吸收；沉积物间隙水；光化学降解

In the buffer solution of HAc-NaAc at pH 3.5, Cr reacts with chrysin by molar ratio 1:3, and forms a highly fluorescent active complex in the presence of some methanol. The maximum excitation and emission wavelengths of the complex are 260 nm and 429 nm respectively.

在含一定量甲醇的pH=3.5的HAc-NaAc缓冲溶液中，铬与白杨素能形成1：3的二元荧光配合物，其最大激发波长和发射波长分别为260 nm和429 nm。

The prepared PU was an elastic solid,which could dissolved in ethanol,and it exhibited strong deep purple fluorescence at the peak of 365 nm along with a shoulder at 386 nm as a thin film. Obviously,the prepared PU also was a kind of uncommon ultraviolet-emitting polymer materials.2.A novel water-soluble rod-coil block copolymer was designed and prepared successfully via the facile isocyanic acid polycondensation method using polyfluorene as rod segment and polyethylene glycol as coil segment in the main chain for the first time.

所制备的聚氨酯是一种弹性固体，可以溶解在乙醇中，同时又显示出具有半导体性质的荧光性能——最大荧光发射峰在365 nm并且在386 nm处有一个小的侧肩峰，可见它又是一种非常难得的紫外发光聚合物材料。2、首次采用了简单的异氰酸酯反应，成功地将聚芴作为刚性链段和聚乙二醇作为柔性链段，以嵌段方式连结到聚合物分子主链上，从而形成了一种新型的具有刚性链—柔性链结构的嵌段共聚物。

On electrical properties of multicrystalline silicon prepared by metallurgic method was investigated.

利用四探针电阻测试仪、光学显微镜、扫描电镜、电感耦合等离子发射光谱仪、能谱分析等设备，从晶粒尺寸、组织形态以及晶界析出物等对冶金法制备的多晶硅电阻率的影响。

The analyses results show this long wavelength emission peak should be attribued not to the emission from aggregators or excimers in films but to the vibronic transition from S1 excited state to S0 ground state.

在对其采用曲线拟合的基础上，进一步对薄膜样品的带隙下激发谱和选择激发荧光谱进行了分析，从实验上论证了长波段的发射峰来自于激发态S1到基态S0的振转跃迁，排除了薄膜聚集体和激基缔合物发光的可能性。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。