A chemical change takes place in any substance when it burns.

This chemical change can be expressed by an equation.

我们可用反应式表示这种化学变化.

The chemical change gives off [ out ] heat and light.

这类化学变化发出 热乎 光.

The chemical composition and casting technology of the lining were described also.

同时还介绍了该衬板的化学成分和铸造工艺.

Choice having introduced the hammerhead and cleading chemical composition.

介绍了锤头和衬板化学成分的选择.

The chemical composition of the pyrolytic oil was clearly known this way.

由此,全面了解了热解油的族分组成和化学组成.

Here is the report of chemical composition inspection.

这是化学成份检验报告.

The infrared spectra ( IRS ) are measured for chemical composition of series gallstones.

用红外光谱法测量了系列胆结石成分的红外光谱.

The influence of chemical composition on austenitizing temperature was introduced.

介绍化学成分对奥氏体化温度的影响.

So that chemical composition tends to coordinate of upper leaf.

使上部叶化学成分趋于协调.

Heat reacts on certain substances to change their chemical composition.

热能作用于某些物质,使其改变化学成分.

Scientists are predicting long-term changes in the chemical composition of the atmosphere.

科学家预测大气的化学成分将会有 长期 改变.

The iron in the chemical compound must be purged.

化学混合物中的铁必须清除.

A chemical compound that contains the group N 3.

(化学)关于或包含基团N3的叠氮化物.

A chemical compound of a halogen with a more element or group.

各种由碳和卤素构成的化合物.

Maybe, if studies on a chemical compound pan out.

有可能, 如果某种化学合成物能研究成功的话.

Transposition of an amino group within a chemical compound.

氨基甲酸的一种盐,用作氮肥.

Is the substance a simple one, or a chemical compound?

这种物质是单质还是化合物?

Analyze a chemical compound.

请分解一种化合物.

An antioxidant is a chemical compound or substance that inhibits oxidation.

抗氧化物是一种化学复合物或物质,可抑制氧化.

Water is the most abundant chemical compound in the boisphere.

水是生物圈中最丰富的化合物.