查询词典 negative ion

ESI and APCI are highly efficient for polar compounds in either the positive or negative ion mode.

高效正面或负面的离子模式中极性化合物的电喷雾和 APCI。

Electrospray ionization tandem mass spectrometry was applied to study fragmentation pathways of 18 kinds of α-amino acids in positive and negative ion mode.

用串联质谱法研究了18种常见氨基酸在正离子和负离子模式下的质谱碎裂规律。

METHODS Analysis of the furocoumarins' mass spectra in the positive and negative ion mode.

方法在正负离子模式下，采用直接进样法进行电喷雾质谱分析。

Electrospay ionization source was applied and operated in both positive and negative ion modes.

目的：建立快速、准确、高灵敏度的中成药中非法添加西地那非的检测方法。

In the air includes the cation and the anion, but between the positive and negative ion must obtain the certain balance.

空气中含有正离子与负离子，而正负离子之间必须取得一定的平衡。

Prohibite take orally, prohibite use with negative ion surface active medicine liquid, for example: soap.

忌口服，禁与肥皂等阴离子表面活型剂合用。

Study and test lay emphasis on the tourmaline particulate''s spontaneous electric polarity, pyroelectricity and its function of surface absorption, electromagnetic shielding, infrared radiation and releasing negative ion.

重点研究和测试了电气石微粒具有的天然电极性、热电性以及表面吸附、电磁屏蔽、红外发射、释放负离子等功能。

It is used mainly for comparing the before and after use of the negative ion sanitary napkin and for the analysis of the health quality of the gentalia.

选择优质有品牌的产品，不但给女性朋友带来健康保障，更使每个月的生理期让自己感受轻松舒畅。

Modern medical science proves that as a vitamin in air the negative ion plays an important role in disinfection, sterilization and actification.

现代医学证明，负离子被称为空气中的维生素，具有极强的消毒、杀菌、再生的作用。

Deqing Panlongxia is an orginal eco-tourism region.There are plenty of ancient trees and Cyathea podophylla which is the live plant fossil. The capability of negative ion is 12.5billion per cubic meter in the vally which is also the largeset natual region consiting of oxygen in South China..

德庆盘龙峡就是一个原始自然生态旅游区，景区内古木葱茏，植物活化石黑桫椤遍布期间，峡谷空气负离子含量达每立方米12.5亿个，是南中国最大的天然大氧库。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。