查询词典 chemicals

Feasibility of tricocyst test with Tetrahymena pyriformis were evaluated by several chemicals (Cu2+, MMC, CP),and the effects on tricocyst by the organic compounds in the pond water with Cl2 were monitored .

然而近几年对加氯消毒饮用水的研究发现，氯能与水体中的微量有机物反应生成具有致突变作用的物质，如Symons[1]等人对美国80个主要城市氯消毒饮水的调查中发现普遍存在较高浓度的三卤甲烷。

Feasibility of tricocyst test with Tetrahymena pyriformis were evaluated by serial chemicals (Cu2+, Cr2O2-4,Cd2+,MMC, CP, Colchicine). There is no significant difference between control and treated groups with negative chemical (Cu2+).

应用致突变阴性、阳性对照(Cu2+， Cr2O2-4， Cd2+，丝裂霉素MMC，环磷酰胺CP，秋水仙素Colchicine)评价四膜虫刺泡发射实验方法的可行性，并应用该方法检测稀土金属离子La3+，Ce3+， Sm3+， Y3+， Gd3+对四膜虫刺泡发射的影响效应。

Chemicals rayed on croplands or forests or garde lie long in soil, entering into living organisms, pa ing from one to another in a chain of poisoning and death.

喷洒到农田、森林或者花园里的化学物质长期滞留于土壤中，渗入有机体内，并彼此相传，形成了一个中毒与死亡的链条。

6 HPLC or ASC grade chemicals for eluent and regenerant preparation.

4.6 使用高效液相色谱纯或美国标准委员会级别的化学试剂来制备淋洗液和再生液。

It has been found that evodiamine and rutaecarpine, two of the bioactive chemicals extracted and purified from Chinese herb Evodiae Fructus, possesses different effects.

吴茱萸碱和吴茱萸次碱是由常用的中药材吴茱萸所萃取出来具有生物活性的物质。

Through salification, esterification, hydrogenation, condensation, oxidation and halogenation etc.,LA can produce useful chemicals and new polymer materials.

同时它具有良好的反应活性，通过成盐、酯化、加氢、缩合、氧化和卤化等化学反应，可制得各种各样有用的化合物和新型高分子材料，因此乙酰丙酸有望成为一个基于生物质资源的新平台化合物。

Doug Schoon, co-chairman of the Nail Manufacturers Council, a group of companies that make products for nail salons, said the chemicals used in salons were safe.

美甲产品制造商委员会联合主席Doug Schoon说，美甲店所用的化学品是安全的。

The purpose of the study was to provide experimental evidence for the exploitation of new and effective fungicides or mixed preparations and for the reasonable application of the chemicals to control Sclerotinia.

［目的］为防治油菜菌核病的有效药剂及复配剂的筛选、研发和应用提供试验依据。

On the basis of reviewing the relevant studies the adjustment and control effects of pine tree smell entomological semiochemical of Scolytidae and other chemicals attack behavior to host were described in detail .

在综合大量国内外研究成果的基础上，就松树寄主气味，非寄主气味，小蠹虫信息素以及其他化学信息物质对调控小蠹科害虫侵袭寄主林木等的行为，作了系统详细的论述。

Semivolatile organic chemicals and organochlorine pesticides in the Huaihe River,Jiangsu Province were analyzed.

淮河水体检测到的半挥发性有机物和有机氯农药绝大多数属于USEPA的优先控制污染物。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。