According to the different post-natal period, the amount and composition of lochia has changed.

根据产后时间的不同，恶露的量和成分也随之发生变化。

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The relationship between catalytic activity and the amount and composition of the free phosphoric acid was studied.

游离磷酸作为硅藻土磷酸盐固体酸催化剂， 用于催化丙烯齐聚和其他反应。

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Nutritional metabolism of domestic animals is close related to growth performance, product quality and faecal amount and composition.

家养动物的营养代谢与其生长性能、产品品质和排泄物的数量及成分密切相关。

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The company's vice president, William Weimer, says the M-88s are legal to purchase by consumers because they have a limited amount of pyrotechnic composition and are not very strong.

CNN: By the CNN Wire Staff

Weather is caused by disturbances within the atmosphere, but climate is controlled by external influences, such as the distribution of oceans and continents, the extent of ice and snow-cover, variations in the amount of energy from the sun, and changes in the chemical composition of the atmosphere.

BBC: Time to spend more money preparing for colder winters?

The amount of charge that can be stored depends on the surface area of the electrodes, the strength and composition of the insulation between them, and how close they are together.

ECONOMIST: Electricity storage