行星构成成分的不同是造成密度差异的主要原因。
Variations in the composition of the planets are largely responsible for the density differences.
许浑送别诗所构成的写作特点，反映了中晚唐送别诗创作模式的形成，也是他的诗作为后世模拟的主要原因之一。
The writing style in his poems reflect the formation of creation pattern of farewell poems in late Tang dynasty, which is also the major reason why he became the model of the later generations.
药物过度应用主要表现于抗感染药物及辅助性治疗药物，是医院医疗收入中药品收入构成比过高的主要原因。
Overusag of drugs expressed mainly among antibiotic and subsidiary drugs, that is the most important cause of the high drug expense in medical care cost.
分析了铁水温降的构成和主要原因，提出了解决措施。
The main reasons of temperature drop of hot metal are analyzed and the solving measures are put forward.
调节对眼的几乎所有屈光构成因素有着显著的影响，视近活动的累积效应是儿童近视眼发生的主要原因；
The accumulation effects of accommodation induced by near-work is the main cause of myopia developed in children.
对工程整体安全构成威胁的诸因素中，渗流破坏是主要原因之一。
The seepage damage is one of the main reasons, in many factors of threats to the overall security.
目的：了解谷城县0～14岁儿童意外死亡的主要原因及其在全死因中的构成。
Objective:To understand the leading causes of accidental deaths and their proportion in all deaths among the children aged 0~14 years in Gucheng county.
分析了敞口铁水罐铁水温降的构成和主要原因及其解决措施。
The ingredients of temperature drop of hot metal are analyzed in this paper and the measures are put forward.
分析了铁水温降的构成和主要原因，提出了解决措施。
The ingredients of temperature drop of hot metal are analyzed in this paper and the solutions are put forward.
船舶横摇运动是构成对船舶安全威胁最为危险的摇荡运动，它是导致船舶倾覆的最主要原因。
It is well known that, as ship roll motion is the most important reason which leads to ship capsizes, it is the most dangerous threat to the safety of ship.
船舶横摇运动是构成对船舶安全威胁最为危险的摇荡运动，它是导致船舶倾覆的最主要原因。
It is well known that, as ship roll motion is the most important reason which leads to ship capsizes, it is the most dangerous threat to the safety of ship.
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