The repulsive forces exerted by the protons loosen the structure of the nucleus.
质子施加的斥力使原子核的结构松弛。
Once synthesized, the histones move into the cell nucleus, where a section of DNA wraps around them to form a structure that resembles beads, or knots, on a string.
一旦合成,组蛋白就会进入细胞核,细胞核内的 DNA 片段会将组蛋白包裹起来,形成一种类似串珠或绳结的结构。
Just as a snowflake requires a nucleus to spur the formation of its intricate crystal structure - a catalyst was required to spur the formation of the desired community.
一片雪花,必须有凝结核才能形成其复杂的晶体结构。在我们期望建立的群体中,同样需要这样的催化剂。
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