这个效应主要是由于在该物质中存在杂质。This effect is caused by __________ there are impurities in the material.?
the fact that
举一反三
- 中国大学MOOC: 这个效应主要是由于在该物质中存在杂质。This effect is caused by __________ there are impurities in the material.（使用同位语从句）
- The stratification of parent material (heterogeneous parent material) has a more complex influence on the material migration and soil fertility, compared with homogeneous parent material. The stratification of parent material will be inherited to soil.
- The main raw material of wood-based panels is wood or no-wood plant fiber material.
- Which of the following statements are correct? A: The greater the modulus, the stiffer the material. B: The stiffer the material, the higher the resistance of the material to deformation. C: The higher the magnitude of elastic modulus, the higher the magnitude of the inter-atomic bonding forces in a material. D: The higher the magnitude of elastic modulus, the lower the magnitude of the intermolecular bonding forces in a material.
- A ferromagnetic material, which is hard to magnetize and demagnetize, could be used as a computer memory material.
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Conjugation is the process of genetic recombination caused by bacteria through the temporary communication of cells and the transfer of genetic material.
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______ is the ability of material to resist permanent change of shape caused by an external force.
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The following is the summary of the reading material with some words missing. Please fill in the blanks with words from the reading material.
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羧酸分子中的羰基不容易发生亲核加成反应，主要是由于羧酸分子中存在 A: p-π共轭效应 B: π-π共轭效应 C: 诱导效应 D: 空间效应
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The phenomenon of hypoxia caused by positive G domino effect may be called（ ）