原子核

With positively charged protons and neutrons without charge of the nucleus.

带正电荷的质子和不带电荷的中子组成原子核。

They have the same number of protons in their nuclei (this is the defining characteristic of an element), but different numbers of neutrons.

在它们的原子核中质子数是相同的（这是一个元素定义性的特征），但是中子的数量不同。

Although all nuclei of a given element contain the same number of protons, they may have different numbers of neutrons.

虽然，给定元素的所有原子核都含有相同数目的质子，但它们的中子数可以不同。

In this paper wecalculated the cross-section ratios of associate η_c +γ productionin the p-p and p-Au collisions and found that this process is connected closely with the nuclear gluon distribution function. Bystudying the associate η_c +γ production in high energy p-Aucollision, we can know more about the nuclear gluon distribution function.

我们计算了p-Au、p-p碰撞η_c与γ协同产生过程的微分截面dσ/dp_T的比值，发现η_c与γ协同产生过程与核内束缚核子的胶子分布函数关系密切，通过对高能质子与原子核碰撞η_c与γ协同产生过程的实验研究，可以加深我们对核内胶子分布的认识。

"It has many uses-in dental and industrial amalgams, as a catalyst, in electrical and measuring apparatus and instruments (e.g., thermometer s), as the cathode in electrolytic cells, in mercury-vapour lamps, and as a coolant and neutron absorber in nuclear power plants."

汞有许多用途，如牙医和工业上用的汞齐、催化剂，电学和测量装置，以及仪器中、电解池中的阴极，汞蒸汽灯，以及原子核发电厂中的冷却剂和中子吸收剂。

"It has many uses-in dental and industrial amalgams, as a catalyst, in electrical and measuring apparatus and instruments (e.g., thermometers), as the cathode in electrolytic cells, in mercury-vapour lamp s, and as a coolant and neutron absorber in nuclear power plants."

汞有许多用途，如牙医和工业上用的汞齐、催化剂，电学和测量装置，以及仪器中、电解池中的阴极，汞蒸汽灯，以及原子核发电厂中的冷却剂和中子吸收剂。

"It has many uses-in dental and industrial amalgams, as a catalyst , in electrical and measuring apparatus and instruments (e.g., thermometers), as the cathode in electrolytic cells, in mercury-vapour lamps, and as a coolant and neutron absorber in nuclear power plants."

汞有许多用途，如牙医和工业上用的汞齐、催化剂，电学和测量装置，以及仪器中、电解池中的阴极，汞蒸汽灯，以及原子核发电厂中的冷却剂和中子吸收剂。

Recent theoretical investigations suggest that in addition to known hypernuclei with S=-1,-2, there is exsiting possibility to produce multi-strange nuclear systems with S≤-3, which may be conventional bound sysytems made up of A baryons or more deeply bound many-body systems consisting of 3A quarks which are confined in a "bag".

近来的理论预言指出，除了已知的S=-1和S=-2的超核外，还有可能存在S≤-3的多奇异性原子核，它们或者是由A个重子构成的弱束缚多体系统，或者是由禁闭在一个&口袋&里的3A个夸克构成的束缚较强的多体系统。

Then they placed an extremely thin layer of silicon dioxide — about two billionths of a meter thick — onto the silicon between the gold contacts.

这样，磷原子核的自旋可以在二氧化硅的表面被检测到。

Bosons include mesons, nuclei of even mass number, and the particles required to embody the fields of quantum field theory.

玻色子包括介子、偶质量数的原子核以及体现量子场论中的场所需要的粒子。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。