The meat is chemically treated to extend shelf life.
猪肉经过化学处理以延长保存期。
Biscuits and crackers are chemically leavened.
饼干和脆饼干是用化学方法发酵的。
But when we analyze these cells chemically, we find something very interesting, a chemical in them, an enzyme called telomerase.
但当我们用化学方法分析这些细胞时，我们发现了一些非常有趣的东西，其中有一种化学物质，是一种叫做端粒酶的酶。
The calotype was revolutionary in its use of chemically treated paper in which areas hit by light became dark in tone, producing a negative image.
卡罗摄影法对化学处理纸的使用是革命性的，其中光照区域色调变暗，形成负像。
It must also be appreciated that many important new bio-products will still be synthesized chemically from models derived from existing biological molecules.
还必须认识到，许多重要的新生物产品仍将从现有生物分子衍生的模型化学合成。
By chemically extracting nickel form the ash, they produced 100 pounds of nickel per acre of land at a total cost per pound slightly above that of current mining.
通过化学方法从灰烬中提取镍，他们每英亩土地生产了100磅镍，每磅的总成本略高于目前的采矿成本。
Agronomists studying the herb have discovered that it produces large amounts of histidine, an amino acid that, in test-tube solutions, renders these metals chemically inert.
研究这种药草的农学家发现，它会产生大量的组氨酸，这种氨基酸在试管溶液中会使这些金属具有化学惰性。
Matter (物质) is always changing, either physically or chemically.
无论从物理还是化学的角度来看，物质都是不断变化的。
它们的化学性质不活泼。
Consider, for example, chemically treated bed nets.
例如，想象一下经化学处理的蚊帐。
The chemically literate will spot a potential snag.
懂化学的人会发现一个潜在的障碍。
Or they can be converted chemically, with catalysts.
还可利用催化剂通过化学手段把它们转换成酒精。
Do not use water that has been chemically treated or "blue" water.
不要用那些用化学方式处理过的水或“蓝水”。
And once some minerals are formed, more can be created chemically.
一旦形成了某些矿物，就会有更多矿物以化学方式形成。
Cesium-137 mixes easily with water and is chemically similar to potassium.
铯- 137很容易与水混合，其化学性质很像钾。
This test ensures that the enclosure will not react chemically with your photos.
摄影活性测试能确保封套不与您的照片发生化学反应。
His group's technology works at room temperature but is more complex chemically.
他这个团队所使用的技术工作在室温，但在化学上更加复杂。
In high-fructose corn syrup, the glucose and fructose molecules are chemically separate.
高果糖玉米糖浆中，葡萄糖和果糖分子在化学上是分开的。
He intends to use a chemically unusual form of iron to clean water up, not make it dirty.
他将利用铁原子的一种非通常化学形态来净化水源，而非污染水源。
Because it behaves chemically like calcium, it tends to concentrate in the bones and teeth.
在化学性质上它与钙相似，趋于进入人的骨骼和牙齿。
The more chemically stable the folded protein becomes, the more points the players are awarded.
已折叠蛋白质的化学稳定性越高，玩家的得分就越多。
They work by either chemically absorbing UV rays or deflecting and bouncing them off your body.
它们的工作原理要么是含有能吸收紫外线的化学物质，要么是使紫外线折射或色散，避开你的身体。
Secondary aerosols begin life as gases and chemically react in the atmosphere to form particles.
次生气溶胶最初以气体形态出现，在大气中发生化学反应从而形成颗粒物。
Here, the robots draw out a sample of spit, and chemically process it to extract the donor's DNA.
在这里，机器自动取出唾液样本，进行化学处理提取捐献者的DNA。
Radon is a chemically inert, naturally occurring radioactive gas without odour, colour or taste.
氡是一种自然产生的放射性惰性气体，它无色、无味、无臭。
Dioxins are a group of chemically-related compounds that are persistent environmental pollutants.
二恶英是一组对环境具有持久性污染力的化学物质。
Dioxins are a group of chemically-related compounds that are persistent environmental pollutants.
二恶英是一组对环境具有持久性污染力的化学物质。
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