物质

There are other metal arsenates, such as those of Fe,Zn,Cu, and Pb, which are less soluble and more stable in the neutral pH region than calcium arsenates or ferric arsenate, but these have not been seriously considered as disposal forms.

还有其他金属砷酸盐，例如那些 Fe、 Zn、 Cu和 Pb，比起砷酸钙或者砷酸铁来，这些物质在中性的 pH 值范围内很少是可溶并且更稳定的，但是这些物质没被以处理的形式认真慎重地考虑过。

In this paper the authors reviewed the characteristics in the different phases in the life cycle of ferns. Special attentions were given to the effect of light, plant growth regulators, water and temperature on the fern gametophyte development, and the effect of antheridiogen, light, calcium and other plant growth regulator on the formation and differentiation of fern sex organ.

作者概述了蕨类植物生活周期中不同发育阶段的特点，并着重介绍了光、植物生长调节物质、水和温度等因素对蕨类植物配子体发育的影响以及成精子囊素、光、钙离子和其它植物生长调节物质在性器官形成和分化过程中的作用。

These pioneers have included the scientists or teams that discovered many of the fundamental particles of matter, analyzed the cosmic microwaves left over from the earliest epoch of the universe, developed carbon-14 dating of ancient artifacts, decoded the genetics of viruses, and created an entirely new state of matter called a Bose-Einstein condensate.

这些先驱者包括科学家或小组，发现了许多基本的物质粒子，分析了宇宙微波遗留下来的时代最早的宇宙，开发碳14测年的古代文物，破译基因的病毒，并建立了一个全新的物质状态称为玻色爱因斯坦冷凝物。

Organic carbon and carbonaceous substances were the most readily removed during aerobic treatment.

有机碳和含碳物质是增养处理期间最容易去除的物质。

Or the organic material will be transformed by heat into a non-hydrocarbon black carbonaceous material of no value.

否则有机物质就会遭热力作用而转化成毫无价值的非碳氢化合物——黑色含炭物质。

A study was done that leads us to believe that these chemicals are carcinogenic.

一项研究是这样做，使我们相信，这些化学物质是致癌物质。

Many of such chemicals have been identified as carcinogenic.

许多这类化学物质已被确定为致癌物质。

Recently, however, scientists have found that the substance turns carcinogenic rather quickly after application.

不过，最近科学家发现，这种物质在使用后迅速的变成致癌物质。

The leaves of green tea contain a special class of bioflavonoids - catechin polyphenols - with antioxidant properties.

绿茶叶中含一种特别的黄酮类物质-儿茶素多酚此物质具强效的抗氧化特性。

In 1974, the first such experiment was carried out by Clauser, who reported a violation of a classical Cauchy–Schwarz inequality. In 1977, Kimble ''et al.'' demonstrated an analogous anti-bunching effect of photons interacting with a beam splitter; this approach was simplified and sources of error eliminated in the photon-anticorrelation experiment of Grangier ''et al.

尽管到了二十世纪七十年代支持光子说的物理和化学实验依据已经相当丰富，证据可能还是不能被认为绝对确凿；因为这些实验都依赖于光与物质的相互作用，而一个足够复杂的关于物质的量子力学理论则仍然有可能去解释这些实验现象。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐