起源于...

The results show that the fatigue fracture of the axis resulted from the sharp angle and the rough surface knife trace of the key slot and were accelerated by the badness metallurgy quality and the coarse austenite grains.

结果表明，中间轴断裂疲劳源起源于键槽尖角和表面粗糙的刀痕，而原材料冶金质量不良和粗大的奥氏体晶粒则加速了疲劳断裂过程。

Among all the alleles,96 showed polymorphisms.The NJ topology tree based on Nei' standard distance indicated that the genetic relationship was closer between Little-tailed Han Sheep and Large-tailed Han Sheep than that between the former and the other two sheep breeds.

采用Nei氏标准距离和NJ聚类分析对不同品种的遗传关系进行分析，结果表明，4个绵羊品种亲缘关系很近，提示它们可能起源于共同的原始祖先。

An larges of each floral promordium originated in peripheral zone cells of floralmeristem .

各花器官原基起源于花分生组织的边缘区细胞。

These three life-sustaining elements all come of stem cells.

这三种维持生命的要素都起源于干细胞。

Coffe liqueurs grew in the 1970s and have become widely available in the cocktail world ever since .

咖啡利口酒起源于1970年并从那时起就成为了风靡鸡尾酒世界的一款利口酒。

The term, which derives from the Greek words "lithos" and "graphe", has now lost its meaning as stone printing except in fine art for making prints.

石印一词起源于两个希腊字：&石块&和&书写&，但逐渐失去原意。现在，石印一词只应用于纯美术版画制作方面。

The modern term Luau may have originated from the great coed feasts of the Hawaiian King Kamehameha II.

现代术语卢奥可能从夏威夷国王卡美第二大节日起源于男女同校。

It was very sudden . The origin of the Taliban was in madrasahs and refugee camps as well. As mostly one of Islamic armed factions in civil war in Afghanistan, there were deep social reasons and historical background in the emergence of Taliban .

塔利班起源于宗教学校和难民营，作为阿富汗内战中的伊斯兰武装的一个主要派别，它的出现有着深刻的社会历史原因和时代背景。

Is generally believed that originated in mallard ducks, and the "poacher" refers to wild duck, narrowly refers to mallards.

一般认为家鸭起源于凫，而&凫&泛指野鸭，狭义指绿头鸭。

In North Wales, the song arose in the 19th century from the chill, dark corners of mines, the yawning maws of slate quarries and the din of their workshops.

北威尔士的民谣起源于19 世纪，来自冰冷漆黑的矿坑角落、板岩采石场敞开的深渊及工场的嘈杂声。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。