塑料原料颗粒本身就是柴油制造的副产品，在生产过程中分离出的任何物质也都会重新进入到生产循环系统中。
The plastic granulate itself is a by-product from diesel, and whatever is discarded in the manufacturing process gets recycled.
我们知道，这样的板块活动对生命形成来说必不可少，它不仅有助于产生复杂化学过程，而且促使物质循环，比如释放二氧化碳进入大气层，使得地球保持温暖。
Such activity is essential to life as we know it, because it helps enable complex chemistry and recycles substances like carbon dioxide into the atmosphere, which keeps Earth warm.
俯冲带和地球系统演化过程中的动力学及物质循环。
And dynamics and mass circulation in subduction zones and Earth system evolution.
水生植物腐烂分解作为湖泊生态系统物质循环以及能量流动的关键环节，是维持湖泊生态系统功能的主要过程之一。
As a key aspect of material cycle and energy flow of lake ecosystem, decomposition of lake aquatic plants is one of the main process of maintaining the lake ecosystem functions.
时间就是物质在空间循环变化的先后逻辑关系和事物变化过程的先后间隔。
Time is the successive logical relationship which circular changes of material follow in space and the internals during which things change.
客观时间就是物质在空间自身固定的循环变化的先后逻辑关系和变化过程的先后间隔。
Objective time refers to the fixed successive logical relationship which circular changes of material follow in space and the internals of the process.
土壤动物是生态系统中特殊的组成部分，在生态系统的物质循环和能量转化过程中起着重要的作用。
Soil animals are special composition in ecosystem that play an important role in the substance circulation and energy transform.
人造土壤机制体现出人类社会和自然界中，物质平衡、物质转化、物质流动与物流循环的运动过程。
The mechanism of artificial soil represents the movement process of material balance, material conversion, material flow and circulation of materials in the human society and nature.
凋落物分解是生态系统碳循环和营养物质循环的关键过程，受多种因素共同影响。
Litter decomposition is an important ecosystem function, and is an indispensable process for carbon and nutrient cycling.
凋落物分解是生态系统碳循环和营养物质循环的关键过程，受多种因素共同影响。
Litter decomposition is an important ecosystem function, and is an indispensable process for carbon and nutrient cycling.
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