故填which.(5)contains. 考查时态和主谓一致。句意:颗粒物中含有微小的颗粒,这些颗粒非常小,如果被人吸入就会导致严重的疾病。描述一个客观的事实,应用一般现在时,主语Particulate matter为第三人称单数,故填contains.(6)seriously. 考查副词。句意:颗粒物中含有微小的颗粒,这些颗粒非常小,如果被人吸入就会导致严重...
In the Standard Model, there are two types of particles: bosons, which carry force and include gluons and gravitons; and fermions, which make up matter and include quarks, electrons and neutrinos, according to Indiana University physicist Pauline Gagnon's blogQuantum Diaries. In supersymmetry, eac...
This is useful because reflections are rendered without post FX and particle systems don't show up in reflections either, so copying depth for reflections is expensive and likely useless. We do make it possible because depth could be used for other effects as well, which might be visible in ...
Which was discovered first: dark energy or dark matter? Who is credited with discovering the atomic nucleus? What particles are not affected by the strong force? Which particles make up the nucleus? Who discovered quantum physics? Who discovered the quantum theory of how electrons move? Who cont...
Collision theory（碰撞理论）指的是化学反应发生的前提是反应物分子之间发生碰撞，且这些碰撞必须满足一定...
room’, the words down, up and inare prepositions. Note that prepositions are always followed by nouns which act as their objects. For example, in the sequence ‘down the street’, the noun street is the object of the preposition down.In the expressions ‘sit down’, ‘she is not up’...
Test collisions at13 teraelectronvoltscould already have produced exotic materiallike dark matter, which is thought to make up nearly 85 per cent of the matter in the universebut has never been directly seen. But detecting new particles at the LHC requires sustained collisions in order to ...
The results show that although the mass concentration of ultrafine particles is negligible in comparison to fine and coarse particles, in terms of number concentration ultrafine particles make up the dominant component of particulate matter, which stands as a warning from the health point of view....
Quarks, which make up protons and neutrons, are another type of fundamental particle. Together with the leptons, quarks make up the stuff we think of as matter. Once upon a time, scientists believed that atoms werethe smallest possible objects;the word comes from the Greek "atomos," meaning...
Rutherford overturned Thomson’s model in 1911 with his famous gold-foil experiment, in which he demonstrated that the atom has a tiny, massive nucleus. Five years earlier Rutherford had noticed that alpha particles beamed through a hole onto a photographic plate would make a sharp-edged picture...