查询词典 C.F.

The general condition for athermalzing an optical system when the object surface is at finite or infinite distance is deduced in this paper, and the principle and design method of employing a diffractive optical element to athermalize and achromatize an optical system with normalized T-C chart are expounded.

本文推导了物面位于有限和无限距离时实现光学补偿的通用条件，论述了利用归化T-C图设计热补偿和消色差红外光学系统的原理和设计方法，给出了8-12μm波段内、焦距123mm、相对口径F/2.5在20-60℃温度范围内的折衍混合红外光学系统的设计结果和理论评价结果，所述的设计方法可方便地推广到前视红外系统中。

Rat in Group B was set an air bladder which was empty and not perfused water. Water of 0.6 ml, 0.8 ml, 1.0 ml, 1.2 ml, 1.4 ml and 1.5 ml was perfused respectively into the air bladders which were set in the colon of rats in group C, D, E, F, G and H. Then the changes of ethology of the rats were recorded in interval of an hour.

应用疼痛行为学的观察方法，观察1h各组动物的行为学改变，并采用免疫荧光化学的方法，观察大鼠DCN中神经元被激活的标志c-fos及胶质细胞的胶质原纤维酸性蛋白(glial fibrillary acidic protein， GFAP)和小胶质细胞特异性补体OX42的表达情况，空白对照组是在疼痛高峰点(1.2 ml)处死取材。

Three clefs are in common use, the treble or G clef, the bass or F clef and the C clef that may be on any line, but is most often used as an alto clef on the middle line of the staff, or as a tenor clef on the second line from the top.

常用的有三种谱号，高音谱号，低音谱号和C谱号，这三种谱号可以出现在任一线上，但最常见的是，中音谱号位于五线谱中加的那条线，高音谱号位于上数第二条线。

A synthesis method of 2-(2'-hydroxyl-4'-benzoyloxy-phenyl)-2H-benzotriazole and derivatives thereof is provided, and is characterized in that 2-(2', 4'-dihydroxyphenyl)-5-X-2H-benzotriazole and benzoyl chloride are taken as raw materials for reaction in solvent for 1-8 hours under the temperature of 50-140 DEC C with the mole ratio of 1 to 0.95-1.1, wherein, the amount of the solvent is 2 to 20 times that of the 2-(2', 4'-dihydroxyphenyl)-5-X-2H-benzotriazole and X represents H, F, Cl, Br.

一种2-(2′-羟基-4′-苯甲酸基苯基)-2H-苯并三唑及其衍生物的合成方法，其特征是，以2-(2′，4′-二羟基苯基)-5-X-2H-苯并三唑和苯甲酰氯为原料，在溶剂中进行反应，反应温度50℃～140℃，反应时间1～8小时，反应原料摩尔比2-(2′，4′-二羟基苯基)-5-X-2H-苯并三唑∶苯甲酰氯为1∶0.95～1.1，溶剂用量为2-(2′，4′-二羟基苯基)-5-X-2H-苯并三唑重量的2～20倍，其中X代表H、F、Cl、Br，具有反应条件温和、反应收率高和产物纯度高的特点。

The ABC o f fice supply co m pany is one of our m any a f filiates.

AB C 办公用品公司是我们众多分公司的其中之一。

F(3.3 C) pressure dew point 3 psid or less pressure drop (+/-.5) Stainless steel CFX heat exchangers Digital Performance Controller Durable, modular construction Redundant operating systems Reliable components for long service life Pneumatic, no air loss drains

38°F（3.3摄氏度）压力露点 3 psid或更少压降（+/- 0.5） CFX不锈钢换热器数字高性能控制器耐用，模块化结构重复操作系统使用寿命长的可靠组件气动，没有空气的损失

Again, the maximum temperature can exceed 30 °C (86 °F) in summer.

再次，最高温度可超过30 ℃（ 86 °F ）在夏季。

Durocher D.F., Mattina C.F., Selke W.A. Diffusion of gasseous component sthrough the wrapper of a cigarette［J］.

烟气中的总粒相物和焦油量随卷烟纸自然透气度增加而降低，这与Müller K.H。

Export transactions based on the contract of sale usually embody such trade terms as the F.O.

基于销售合同所做的出口贸易通常含有 F.O.B， C.I。

J3 i3 U9 7 \0 X- F or I call my guy in the chicago P.D.

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However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。