氟

To pretreatment human hair samples by burning oxygen bottles, with a total strength as absorbent, and then use of fluoride ion electrode as directed electrode, and saturated calomel electrode as the reference electrode. To determine with improved Gran's Drawing with a satisfactory result.

用氧瓶燃烧法预处理人发样品，以总离子强度剂兼作吸收剂，然后直接用氟离子选择电极作指示电极，饱和甘汞电极作参比电极，用改进Gran's作图法进行测定，结果满意。

The compatibility of hydrogenated nitrile rubber and perfluoromethylvinylether was investigated using vulcanization coefficient, physical properties, Dynamic Mechanical Thermal Analysis and Differential Scanning Caloricity.

从氢化丁腈橡胶/氟醚橡胶并用体系的硫化特性、物理性能、动态力学性能及热力学性能等方面对HNBR与PMVE的相容性进行了研究，并从分子结构方面予以分析讨论。

More than 70％ of the amount of ethion, dicofol and cyhalothrin uptaken by canna maintained at roots and this ratio increased with the decreasing of water solubility of the pesticide.

美人蕉吸收的乙硫磷、三氯杀螨醇和三氟氯氰菊酯中，有70％以上富集于植物根系中，且在根系中的富集程度随农药水溶解度的下降而增加。

The antitumor activity results show that most cantharidin derivatives inhibit the growth of the PC-14 and A 2780 tumor cells at the dose of 100μg/ml.

结果表明：所合成的化合物的抑瘤率，特别是100μg／ml药物浓度下的抑瘤率和对照品5-氟尿嘧啶的抑瘤率相当，显示了较好的抑瘤效果。

The microparticles were prepared by the solvent/non-solvent method, using biodegradable poly-3-hydroxybutyrate PHB as the scaffold to capsulate the 5-Fu.

为降低该类药物的释放速度，首先利用溶剂非溶剂法，以生物可降解的聚羟基丁酸酯为骨架，制备了抗癌药物5-氟尿嘧啶的微粒。

There is always 'replacing the Fl system with a Carb'.

总是有'取代氟系统的碳水化合物'。

Based on this model, the structures, dipole moments and the nuclear magnetic resonance parameters were calculated for a series of functionalized nanotubes, including nitrene and carbene modification, as well as 1,2- and 1,4-fluorination.

本文采用C80H20模型来表示(10，0)碳纳米管，基于此模型计算了一系列氮烯、卡宾和氟化的单壁纳米管的结构、偶极矩，以及核磁共振参数。

The results indicated that the high level density functional theory calculations can be used to predict the 13C chemical shifts of the modified nanotubes. The calculated results also provided the characteristic chemical shifts values of nitrene (superscript -), carbene (superscript -) and 1,2- and 1, 4-fluorinated nanotubes, which would be helpful for experimental spectrogram assignments. Combined with NMR experiments, these predicted characteristic chemical shifts can be further used to monitor the addition mechanism and the extent of surface modifications on nanotubes.

研究表明高精度的密度泛函理论计算能够用来预测纳米管的13C化学位移，理论研究的结果揭示了氮烯、卡宾以及1，2和1，4氟化的单壁纳米管的若干13C信号特征化学位移值，为实验NMR谱图的归属提供了一定的依据，并且可通过与实验相结合来监测表面官能化碳纳米管加成反应是否发生以及确认其加成方式。

Product 11 was transformed to the 2,6-difluoropyridine-4-carboxylic acid (12; 87%) by consecutive halogen/metal permutation and carboxylation.

产品11个，转化为2，6 -二氟- 4 -羧酸（12； 87％）的连续卤素/金属置换和羧化。

Objective: To investigate the relationship between the content of fluoride in deciduous enamel and caries status in children.

目的：探讨乳牙釉质氟元素的分布及其与龋病状况之间的关系。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。