查询词典 F.

The direct incorporation of U-13C glucose was estimated by the intensity increase of m/z to F(F was parent fragment, and n was the carbon number in the fragment), while the total isotope incorporation from the added 13C could be calculated according to the abundance ratio increment summation from m/z (Fa+1) through (Fa was the fragment containing all original skeleton carbons, and T was the carbon number in the amino acid molecule). The 13C enrichment in the target compound was expressed as atom percentage excess, and that of D-amino acid needed to be corrected by the coefficient of hydrolysis-induced racemization. The 13C enrichment reflected the carbon turnover velocity of individual amino acid enantiomers, and was powerful to investigate the dynamics of soil amino acids.

外加葡萄糖直接合成氨基酸的比例可利用质谱碎片的相对强度变化来评价（n为质谱碎片F中含有的碳原子数目）；而源于葡萄糖的13C同位素在氨基酸分子中的富集程度是所有同位素峰相对强度变化的总和。13C在目标化合物中的富集比例用原子百分超评价，D氨－基酸的APE还需进一步利用水解诱导的外消旋化系数校正。13C在目标化合物中的富集程度可反映各氨基酸手性异构体的碳循环速率大小，是研究土壤氨基酸动态变化的有力工具。

A hypothesis is presented in the second chapter of this discourse based on the theory of F/M, to improve the unit's capability of phosphorus removed by advisably increase the value of F/M, and this hypothesis is proved to be practically feasible by a model experiment.

本文第二章从对F/M的理论分析出发，提出了在原有一体化氧化沟参数水平上适当地提高污泥负荷来实现提高除磷能力，使出水COD、TN、TP等指标全面达标的设想，通过模型试验证明这样的设想使切实可行的。

You will be able to participate in interception and assault missions and fly 3 types of modern jets F-16 Fighting Falcon, F-4 Phantom II and B-2 Spirit equipped by 4 types of powerful weapons, including missiles, a machine gun, rocket pods and bombs.

你可以驾驶着拥有强力武器的4种现代喷气式F-16飞机、F-4幻影、B-2灵魂号等。它们都准备着导弹、机关枪、火箭炮和炸弹。

In this paper,it was proved that for a given m≥2,f~is topologically ergodic resp.

本文证明了：对任意m≥2， f~是拓扑遍历的当且仅当f~=f~是拓扑遍历的。

Sprey and Wheeler argue that the F-35 is "actually less manoeuvrable than the appallingly vulnerable F-105 'Lead Sled' that got wiped out over North Vietnam" during the Vietnam conflict.

Sprey和惠勒认为， F - 35的是&比实际少可操纵的可怕脆弱的F - 105的领先优势，雪撬'这超过了消灭北越&在越南的冲突。

The burst pressure of the disk must not exceed the minimum DOT required test pressure of the cylinder (except as noted under Type CG-1); the fusible metal must yield between 157-170°F (165°F nominal).

破裂压力不能超过DOT要求的钢瓶的最小测试压力（除了在CG-1型那一节注明的）；易熔金属在157到170°F (标称165°F)之间变形。

Especially in the NIR region,the luminescent properties are special:the emission spectra have difference from the theoretical values and some reported complexes,that is,the characteristic f-f emission bands of Ln~(3+) ions present obvious shifts,broad and splittings.

特别是在近红外区的发光具有特殊性；得到了一些与理论值及文献报道相比较有明显差异的发射光谱，即Ln~(3+)的特征f-f发射带产生了明显的位移、加宽或劈裂。

It is likely that Raytheon will use the APG-63, because it was designed specifically for the F-15 and has already been sold to equip F-15s for Singapore and the U.S. Air National Guard.

雷声公司很可能将采用APG-63，因为它是专门为F-15设计的，并且已经卖给新加坡和美国空军国民警卫队用来装备F-15s。

Vibrationally excited molecular nitrogen N*2 plays an important role in the F region ionosphere by increasing the loss rate of the dominant ion O+, thereby reducing the electron concentration in the F region of the ionosphere.

激发态氮分子N*2在电离层F区中起着重要的作用，它使F区占主导地位的O+离子的损失率增大，从而使该区的电子浓度减少。

My late father DR DAMIAN F Asiku was chairman managing director ( F Asiku INDUSTRIAL COMPANY LTD), in Kigali the capital of my country,and he was also the personal adviser to the former head of state before the rebels attacked our house one early morning and killed my mother and father in a cold blood.

我已故的父亲 DAMIAN F Asiku 博士是F Asiku 工业公司的总经理，在我的国家的首都基加利，他也是前国家领导的私人顾问。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。