查询词典 pre-existent

Based on the point spread function of holographic system, the lateral resolution of digital holographic imaging system without any pre-magnification is studied.

基于全息系统的点扩散函数，研究了无预放大的数字全息成像系统的横向分辨率，给出了该系统横向分辨率极限的正确表达式。

In the Confucian philosophy, reinforced by Marxist dogma, respect flows from bottom to top, and the diktat from the top cannot be altered down the line. We found ourselves banging against a stone wall every time we pleaded for a change in the pre-determined itinerary. It was futile to argue that we had not come all the way to China to visit a printing press in Beijing, and we would prefer to see Tiananmen Square instead.

两个星期之后，我只能得出这样一个结论：中国人在他们国家里之所以远远没有印度人在印度国内那么常见，是因为他们清楚地知道他们在进程表中所处的位置并且不会偏离它。

The best optimum conditions of the Agrobacterium mediated genetic transfornation were that leaves explants were immersed in the diluter 10 times Agrobacterium bacilli at OD600 of 0.6 for 8 minutes after being pre-cultured for 2 days,and then co-cultivated for 3 days.Then these explants were transferred to selected and rooting medium which contained 50 mg/L Kanamycin and 500 mg/L Carbenicillin.According to the transformation system, 54 transgenic plants were initially screened,then after PCR analysis and RT-PCR analysis 25 transgenic plants were obtained.

根癌农杆菌介导的芪合酶基因遗传转化的最佳条件为：将预培养2 d的烟草外植体，用稀释10倍的GV3101菌株菌液（OD600=0.6）浸染8 min后，共培养3 d，然后转入含卡那霉素50 mg/L和羧苄青霉素500 mg/L的筛选分化培养基上诱导分化，待抗性芽长到2～3 cm后，转入含Km 50 mg/L和Cb 500 mg/L的筛选生根培养基上进行筛选，在以上最佳遗传转化条件下，初步筛选到54株转化体，经PCR和RT-PCR检测获得25株转化烟草植株。

Guests and the audience were also invited to a pre-concert reception to savour some German "dim-sum" and sample a variety of German wines.

音乐会前，嘉宾与观众亦有机会一尝德国的「点心」及美酒。

The eyeball movement and diplopia were examined and recorded pre-operation, 3, 6 and 12 months after operation, respectively.

分别于术前和术后3、6、12个月检查并记录复视和眼球运动情况。

The results of further experiments show that most of the metallic oxides give a catalytic effect on NO/CO reaction, while pre-reduced Ni2O3 sample shows remarkable catalytic activity to the direct decomposition of NO.

大部分金属氧化物以对NO/CO反应的催化作用为主，而Ni2O3的预还原试样对NO的直接分解反应表现了极强的催化活性。

By 18 the night of the impact of various policies introduced in the 19 pre-auction stage, the huge buying 14 banking stocks will direct all letters to the limit.

了在19前提出多项政策，拍卖阶段，庞大的银行股买14日晚将直接影响到了极限的所有信件。

By using the computer emulation technique, This paper researched design parameter (the equivalent radial or axial direction stillness , the damp parameter, the bearing pre-tightening force, the span, the extra centralized mass and damp) influence law on dynamical characteristic of the principal axis system, which made a meaningful explorati.

采用计算机仿真技术，研究轴承等效径向刚度与阻尼参数、轴承预紧力、跨距，附加集中质量和阻尼等设计参数对主轴系统动力特性的影响规律，为主轴系统的动态优化设计进行了有意的探索。

Disaggregation of pre-socialism states and China's reform were reactions to the inconsistencies.

但按劳分配规律自诞生之初就蕴涵着导致自身崩溃的矛盾，苏东前社会主义国家的解体与中国的改革都是对这些矛盾的反应。

60 pre-selected patients with discolored teeth were randomly and evenly divided into 2 groups.

经过筛选的60位变色牙患者被随机均分为两组接受16%过氧化脲NGVB治疗。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。