您要查找的是不是：
- This charge is a positive charge. 这个电荷是正电荷。
- The fur must have a positive charge. 毛皮必定带有正电荷。
- Cathode rays are attracted by a positive charge. 阴极射线被阳电荷所吸引。
- A proton carries a positive charge and repels each other. 质子带正电荷,互相排斥。
- An electron has a negative charge,a proton has a positive charge. 电子带负电荷,质子带正电荷。
- The plate is impressed with a positive charge so that it may flow electrons. 阳极带有正电荷，这样就能使电子流动了。
- Hole - Similar to a positive charge, this is caused by the absence of a valence electron. 空穴-和正电荷类似,是由缺少价电子引起的。
- As soon as a positive charge approaches an electron, it combines with the latter. 正电荷一旦遇到电子,就与之结合。
- The positive pole carries a positive charge while the negative pole does a negative charge. 正极带正电荷, 负极带负电荷。
- One end of each molecule had a positive charge and the other end had a negative charge. 每个水分子的一端带上正电荷，而另一端带上负电荷。
- A proton has a positive charge and an electron a negative charge, but a neutron has neither. 质子带阳电，电子带阴电，而中子既不带阳电，也不带阴电。
- An ion or group of ions having a positive charge and characteristically moving toward the negative electrode in electrolysis. 阳离子带有正电荷的一个或一群离子，特点为在电解中向阴极运动
- A proton has a positive charge and a electron a neigative charge, but a neutron has neither . 质子带有一个正电荷，电子带有一个负电荷，但中子正负电荷都不带。
- Her behaviour was a positive outrage. 她的行为残暴到了极点。
- DNA has a negative charge, while salt has a positive charge, so the salt neutralizes the DNA, which makes the DNA easier to extract. DNA带有负电荷，而盐带有正电荷，因此盐中和了DNA，使得DNA更容易被提炼出来。
- So, the antiparticle of the normal electron is called the positron, as it has a positive charge, but the same mass as the electron. 这样，正常电子的反粒子叫做正（阳）电子,如同它有一个阳电荷一样,但是与电子的质量一样。
- If there are five or more bonds to a single carbon atoms, it will be short of electrons and have a positive charge - this species is called a carbonium ion, a form of carbocation. 阳碳（碳鎓）：如果有五个甚至更多的键连接在一个碳原子上，碳原子由于缺乏电子而带正电，这种物质称为阳碳（或碳鎓），这是碳正离子的一种。
- He has a positive attitude towards life. 他对生活持有积极的态度。
- The drops are usually negatively charged, but occasionally one with a positive charge is found. 这些油滴一般都带负电,但偶尔也发现有带正电的。
- He was not in a position to do it then. 他当时还不能做。
