他指出，从环太平洋缓慢生长的珊瑚中获得的气候数据表明，在拉皮塔扩张时期，厄尔尼诺现象曾频繁爆发，这很不寻常。
He points out that climate data obtained from slow-growing corals around the Pacific indicate a series of unusually frequent El Ninos around the time of the Lapita expansion.
轴向拉伸比和环向扩张比要合理匹配。
The axial drawing ratio and hoop extension ratio should be properly matched.
目的探讨导尿管球囊扩张治疗环咽肌失弛缓症的可行性。
Objective To explore the feasibility of catheter sacculus expanding therapy for cricopharyngeal achalasia.
本文首先考虑了对称环的性质和基本的扩张。
We first consider properties and basic extensions of symmetric rings.
本文主要研究了偏序半环的偏序扩张和有限全序扩张，并得到了一些新的结果。
In this paper, we mainly study extensions of partial order and finitely totally order for partially ordered semirings, and obtain some new results.
目的探讨二尖瓣环收缩期峰值速度及收缩期位移评价扩张型心肌病患者左室收缩功能的价值。
Objective To probe the value of mitral annulus peak systolic flow velocity and systolic displacement in evaluating left ventricular systolic function of dilated cardiomyopathy patients.
活塞环有接口（也就是有一缝隙），这样可以使端部扩张并滑入活塞上的凹槽中。
The rings have joints (they are split) so that they can be expanded and slipped over the piston head and into the recessed grooves cut in the piston.
轴肩较大的搅拌头有利于塑性金属在焊缝厚度方向上的迁移，洋葱环更易于在厚度方向上扩张。
The stirrer with bigger shoulder contributes to the transformation of plasticity in the direction of weld thickness, it is easier for onion rings to expand in the weld thickness direction.
同时，还证明了半直和的剩余类环是整环的一个整扩张。
An integral extension construction of domains was also derived by using the semi-direct sum of rings.
证明了任一环有代数封闭的扩张环，且实封闭域上的四元数体是代数封闭的，给出了代数封闭环的若干性质。
The two theorems are proved that any ring can be extended into an algebraically closed ring and that the quaternionic skew field over a real closed field is algebraically closed.
给出满足主右理想极小条件诣零环的两个充要条件，此类环是扩张闭的。
This peper gives two necessary and sufficient conditions for a ring to be a nil MHR-ring. It is obtained that any nil MHR-ring is extension closed.
同一装置还可用于观察牵拉纵肌或扩张环肌所引起神经节细胞电活动的变化。
The preparation of the isolated IMG-colon and the apparatus used in this technique were also applicable in studying the effects of muscle stretch of the colon on the neuronal electrical activities.
扩张角的增加可提高速度环量，但是流动混合损失增加，总压恢复系数减小。
The increase of lobe diffusion angle results in the increase of velocity circulation at the lobe exit section, but it raises the mixing loss and lowers the pressure recovery coefficient.
目的观察二丁酰环磷腺苷钙扩张型心肌病心力衰竭的疗效。
Objective To assess the therapeutic effect of calcium dibutyryladenosine cyclophosphate on heart failure in patients with dilated cardiomyopathy (DCM).
目的观察二丁酰环磷腺苷钙扩张型心肌病心力衰竭的疗效。
Objective To assess the therapeutic effect of calcium dibutyryladenosine cyclophosphate on heart failure in patients with dilated cardiomyopathy (DCM).
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