查询词典 precipitation

Acid precipitation or sediment is the indirect product of human activities that exert multiphase influences on human environment.

探索地质作用对长期运行或永久性工程的负效应尤为迫切，需要开展及时的研究。

In this paper alkali extraction and acid precipitation of rutin from bud of Sophora japonica L was studied.

探讨了碱提酸沉法提取槐花中的芦丁。

A new catalyst for methanol synthesis was prepared by alternant precipitation between acid and alkali.

采用酸-碱交替沉淀法制备了一种新型的低压甲醇合成催化剂。

After freezing, the tissue is powdered and the enzymes are inactivated by precipitation with perchloric acid.

冷冻之后，组织被粉碎，其中的酶用高氯酸迅速失活。

The existence of acid deposition or acid precipitation has been known for years. Only in recent years, however, has acid deposition been recognized as a problem.

酸性排泄物和酸性降落物的存在已被知晓了许多年，但仅在最近几年酸性排放物被认为是一个环境问题了。

The separation and purification technologies of amino acid,such as: precipitation ,ion-exchange,extraction and membrane separation were reviewed.

总结了氨基酸分离纯化过程中常用的技术，如沉淀法、离子交换法、萃取法和膜分离法，介绍了各种技术的基本原理、特点和发展动态。

The optimum pH range of acid precipitation was 2.5-4.5, the protein content was 82.87% and the recovery of nitrogen was 28.51%.

酸沉的pH范围是2.5~4.5，蛋白含量为82.87%，氮的回收率为28.51%。

This study aims to study the interrelationship between energy policy and environment quality, primarily on air pollutants relevant to acid precipitation and global climate changes.

本研究主要目的在於探讨能源政策与环境品质的相关性，以确认能源与环境的关键问题及寻求台湾未来整合能源与环境的可能方向。

Furthermore, acid precipitation erodes stone buildings and monuments.

更重要的是，酸性物质会腐蚀石质的建筑物和纪念碑。

The results indicated that the leaching of acid rain led to increasing of latent acid of soil in short time though amortizing of soil to acid precipitation.

许多研究认为，人为酸化的因素主要有大气污染引起的酸雨输入 [2、3] 和施入氮肥引起的硝化作用 [4、5] 两方面。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。