So Farihi thinks that the trace elements must have come from another source: remnants of rocky planets, forming a ring of debris that slowly rains down on the white dwarf.
因此Farihi认为痕量元素肯定来自另一来源：岩石行星的残骸形成的碎屑环，慢慢地向白矮星掉落。
The martial art and sport of attack and defense, practiced in a boxing ring and combining many elements of karate and boxing.
一种攻击和防卫的武术和体育运动，在拳击圈内进行，把空手道和拳击的许多特点融为了一体。
The article analyzed the relationship between tree ring-width chronologies and the meteorological elements in west Sichuan plateau by sequential analysis of 4 tree-ring chronologies.
本文利用川西高原4条树木年轮年表序列，分析了树轮年表和川西高原气象要素的关系。
It mainly discusses units, prime elements, factorization, the properties of residue class ring of quadratic domain in the paper.
主要讨论了二次整环的单位、素元、因子分解、二次整环的剩余类环的性质等问题。
On the basis of previous works, in this paper, the general formulas and the recurrence formulas for radial matrix elements of the ring-shaped non-spherical oscillator are derived.
在此基础上，给出了环形非球谐振子径向矩阵元的通项公式和不同幂次径向矩阵元之间所满足的递推关系。
This paper is a study on the invertibility of the commutator of scalar-idempotent elements and scalar-involutory elements of a unitary ring.
本文研究在一个有单位元的环中两个倍幂等元的换位子与两个倍对合元的换位子的可逆性问题。
The concept "equivalent ring" simplifies the array model in the method of equating arrays with unequal elements to arrays with the same elements in each ring.
文中提出了“等效环”的概念，把旋转对称面上不等元分布共形阵等效为等元分布的情形，简化了共形阵的物理模型。
The concept "equivalent ring" simplifies the array model in the method of equating arrays with unequal elements to arrays with the same elements in each ring.
文中提出了“等效环”的概念，把旋转对称面上不等元分布共形阵等效为等元分布的情形，简化了共形阵的物理模型。
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