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病毒在它的等电离点以上时带负电荷.用英语怎么说？

病毒在它的等电离点以上时带负电荷.

A virus is nigatively charged above its isoelectric point.

相关词汇
virus is charged above its isoelectric point

virus

n. 病毒，病毒性疾病，毒素，毒害，[计算机科学]计算机病毒；

is

vt.& vi. 是（be的三单形式；n. 存在；

charged

adj. 充满感情的，紧张的，可能引起激烈反应的；v. 填充；

above

prep. 在…上面，超过，大于，不至于；adv. 在上面，超过，更大，上文；adj. 上述的；

its

pron. (it的所有格形式)它的，厥；

isoelectric

adj. 等电位的，零电位差的；

point

n. 点，要点，得分，标点；vt. （意思上）指向，削尖，加标点于，指路；vi. 表明，指向；
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