抽选

Methods Whole blood sample (2ml) acquired from 12 volunteers via a large antecubital vein was heparinized with 10U/ml heparin sodium and ice-bathed down to 4℃ and divided into the following groups: control group , PAF group , FMLP group, PAF+FMLP group , FMLP+lidocaine (10-4 M) group and lidocaine (10-4M,10-5M,10-6M )groups . the expression of CD11b in neutrophils was detected by flow cytometry in different groups .

选12名健康的成年志愿者，每位志愿者抽肘前静脉血2ml，肝素抗凝，置冰浴中降温至4℃分组如下：对照组，血小板活化因子组，趋化寡肽组，血小板活化因子+趋化寡肽， FMLP+利多卡因（10-4 M）组和P+F+利多卡因（10-4M，10-5M和10-6M）组，分别测定PMN CD11b的表达水平。

To meet the needs, a novel low-noise fiber laser with compound cavity structure is designed. The stable single-mode operation is realized by using a transient self-written fiber grating, produced by the effect of saturable absorption within a section of unpumped erbium-doped fiber, as narrow band filter for mode selecting and linewidth squeezing. Through optical path modification, the spectral signal-to-noise ratio is better than 62 dB.

激光器采用复合腔结构，以掺铒光纤作为工作物质，通过在未被抽运的掺铒光纤中形成的瞬态自写入光纤光栅的窄带滤波特性进行选模和压窄线宽，产生稳定的单频激光输出；经过光路改进，激光输出光谱信噪比优于62 dB；利用光电负反馈电路，弛豫振荡峰下降了约25 dB，低频段强度噪声也大为改善，有效地抑制了光源的强度噪声。

Based on the ring-shaped laser-diode array side-pumped Nd:YLF high gain amplifier and the conventional plan-concave resonator, a simple structure single-longitudinal-mode single-pulse Q-switched oscillator is demonstrated by taking advantages of mode-selecting property of passive Q-switches (Cr4+:YAG crystal) and etalons (formed by two end of uncoated Nd:YLF rod).

以激光二极管环形阵列侧面抽运Nd：YLF棒高增益放大器模块为基础，在经典的平凹驻波腔中加入一片Cr4+：YAG晶体作为被动Q开关，利用被动Q开关本身所具有的振荡选模功能以及两端不镀膜的Nd：YLF棒所具有的标准具效应，简便地实现了稳定的单脉冲、单纵模调Q输出。

The structures of the straight core-pulling mechanism such as guide strip slide structure,guide rod sliding plate structure,guide strip structure and sleeve structure are introduced and their characterˉistics are stated.

介绍了导轨滑块机构、导杆滑板机构、导条机构、套筒机构等直抽芯机构的结构及特点，此类机构主要用于管件类模具中，应根据实际情况加以选

With the development of highway construction, the speed of cars has been gradually increased.

随着公路的发展，汽车的车速也在不断提高。

So we basically had to develop a bond with the animal in terms of socializing with it.

所以我们就主要想通过跟它沟通的方式来建立一种良好的关系。