生物与制药工程专业英语第二三五单元翻译(3)

An acid can be defined as a substance that dissociates into one or more hydrogen ions (H+ ) and one or more negative ions (anions). Thus, an acid can also be defined as s proton CH+ ) donor. A base dissociates into one or more positive ions (cations) plus on or more negatively charged hydroxide ions (OH- ) that can accept, or combine with, protons. Thus, sodium hydroxide (NaOH) is a base because it dissociates to release hydroxide ions, which have a strong attraction for protons and are among the most important proton acceptors. A salt is a substance that dissociates in water into cations and anions, neither of which is H or OH

酸可以被定义为一种物质dissociates成一个或多个氢离子(H +)和一个或多个负离子(阴)。因此,一个酸也可以被定义为s质子CH +)捐献者。基地dissociates成一个或多个正离子(阳离子)加上或更多的带负电荷的氢离子(哦-),可以接受,或者结合、质子。因此,氢氧化钠(氢氧化钠)是一个基地,因为它dissociates氢离子的释放,这有一个很大的吸引力,为质子质子中最重要的杂质。盐是一种物质dissociates阴离子在水变成阳离子,这两者都是H或哦

历史老照片不能说的秘密慈禧军阀明末清初文革晚清

Where the definition in a monograph states the tolerances as being "calculated on the dried (or anhydrous or ignited) basis, " the directions for drying or igniting the sample ptor to assaying are generally omitted from the Assay procedure. Assay and test procedures may be performed on the undried or unignited substance and the results calculated on the dried, anhydrous, or ignited basis, provided a test for Loss on drying , or Water , or Loss on ignition , respectively, is given in the monograph. Where the presence of moisture or other volatile material may interfere with the procedure , pr