compound occurs

例句 (10)

• The active compound in this plant occurs only in its leaves.这种植物中的活性化合物仅在其叶片中存在。
• Scientists are studying how these specific compounds occur in marine ecosystems.科学家们正在研究这些特定的化合物是如何在海洋生态系统中出现的。
• Historically, it was believed this compound occurred only in one region of the world.历史上，人们曾认为这种化合物只在世界上的一个地区出现过。
• This toxic compound can occur naturally in certain types of fungi.这种有毒化合物可以自然地存在于某些类型的真菌中。
• The textbook chapter explains where the simplest organic compounds occur.教科书的章节解释了最简单的有机化合物存在于何处。
• Traces of the compound have occurred in samples taken from meteorites.从陨石中提取的样本里出现了这种化合物的痕迹。
• Do any similar compounds occur in the human body?人体内会出现任何类似的化合物吗？
• This rare mineral compound occurs where volcanic activity is high.这种稀有的矿物化合物出现在火山活动频繁的地方。
• It's unlikely that such a complex compound would occur without a biological catalyst.如果没有生物催化剂，如此复杂的化合物是不太可能出现的。
• We must determine if this compound occurs in quantities large enough for commercial extraction.我们必须确定这种化合物的蕴藏量是否大到足以进行商业开采。