The most general means of generating carban nucleophiles involves removal of a proton from a carbon . 從碳原子上移走一質(zhì)子,是產(chǎn)生親核性碳的最普通手段。
We shall see later that gluons are essential to the dynamics of the quarks inside the proton . 后面將會(huì)看到,膠子對(duì)于質(zhì)子內(nèi)夸克的動(dòng)力學(xué)機(jī)制來(lái)說(shuō)是必需的。
The gravitational interaction is disregarded when interactions between individual protons are considered . 在考慮單個(gè)質(zhì)子間相互作用時(shí),萬(wàn)有引力可以忽略不計(jì)。
Two protons brought together will also fly apart-if neutrons are not present to hold them together . 兩個(gè)靠攏的質(zhì)子也會(huì)飛開(kāi)--如果不是有中子把它們保持在一起的話。
When the protons strike the air, nuclear collisions occur, giving rise to a shower of various particles . 當(dāng)質(zhì)子撞擊空氣時(shí),發(fā)生原子核碰撞,產(chǎn)生各種各樣的粒子的簇射。
The incoming streams of solar protons and electrons are affected by the earths magnetic field in a complicated way . 太陽(yáng)的質(zhì)子和電子的入射流,受到地球磁場(chǎng)的復(fù)雜作用。
A rudimentary description of a nucleus consists in specifying the number of protons and neutrons it contains . 對(duì)某個(gè)原子核的初步描述,在于確定它所含的質(zhì)子和中子的數(shù)目。
Heavier nucleus was believed to be formed of a number of protons and electrons packed closely together . 人們相信,較重的原子核是由若干個(gè)質(zhì)子和電子緊密聚集在一起而形成的。
When the total number of protons equals the total number of electrons, the body as a whole is electrically neutral . 當(dāng)質(zhì)子總數(shù)等于電子的總數(shù)時(shí),這個(gè)物體就整體來(lái)說(shuō)是電中性的。
This conclusion is consistent with the idea that all atomic nuclear are built wholly of neutrons and protons . 這個(gè)結(jié)論與如下的思想是一致的:所有的原子核全部由中子和質(zhì)子組成。
a stable particle with positive charge equal to the negative charge of an electron
百科解釋
The PROTON Ontology (PROTo ONtology) is a basic upper-level ontology that contains about 300 classes and 100 properties, providing coverage of the general concepts necessary for a wide range of tasks, including semantic annotation, indexing, and retrieval of documents.