face value of Letter A/B是什么意思

用法例句

Clinical Analysis of the Non-fungal Nail Disorders;

非真菌性甲病152例临床观察

Objective To develop a new method of reconstructing the nail by the exchanging its residence backward when the wounded finger is being treated.

目的创建一种通过组织后徙易位再造伤指甲床的方法。

We investigated the manifestations,prevalence and pathological changes of nail abnormalities in 2000 cases and with alopecia areata with 2130 normal person as control.

我们对2000例斑秃(alopeciaareata,简称AA)患者甲病变的临床表现、发生率及病理改变,进行了观察,并以2130例普通人群作为对照。

Starting from the accumulated points of the Chinese Football League A 2002 and 2003 as well as the accumulated points of the Chinese Football Super League, the paper studies the origin of CFSL and works out its solutions.

从2002、2003年甲A积分、中超积分数据出发,通过相关性分析,研究"中超黑洞"产生的原因及其解决方法。

Coupling reaction of formaldehyde and methyl formate over sodium bisulfate catalyst;

硫酸氢钠催化甲醛与甲酸甲酯的偶联反应

Coupling of formaldehyde and methyl formate catalyzed by aminosulfonic acid;

氨基磺酸催化甲醛和甲酸甲酯偶联反应的研究

Study on synthesis of methyl formate by methanol carbonylation using pyridine promoter;

吡啶助催化甲醇液相羰化合成甲酸甲酯研究

The selective oxidation of dimethyl ether(DME)to methyl formate and other hydrocarbons over four zeolites,namely HZSM-5,Hβ,HY and Al-MCM-41,and metal(Mn,Mo,Co,Cu)modified HZSM-5 catalysts were investigated by using DME and O2 as reactant gases and helium as diluent with a mole ratio of 5∶1∶6 under a pressure of 0.

8%,甲酸甲脂(MF)的收率可达6。