查询词典 quaternary

This paper first reports the synthesis and applications in hydrolysis and etherification of a new polymer supported quaternary ammonium resin, which is an effective triphase catalyst .

本文首次报道一种新的高分子固载季铵树脂的合成及其在水解、成醚反应中的应用，此树脂是一种有效的三相催化剂。

It means that there was grouped faulting in late Quaternary in the Xishan Fault group.

这显示西山断裂组晚第四纪活动有分组和组合破裂的特征。

Rabbits received naloxone HCl intracerebroventricularlyor naloxone methiodide IV, a quaternary compound that does notcross the blood–brain barrier, 5 min before FENT treatment(5 or 50 g/kg, IV).

使用 FENT 治疗（5或50 g/kg ，静脉注射）前5min ，向家兔脑室内注射盐酸纳洛酮或静脉注射甲硫丁氨酸纳洛酮（一种四元化合物，不能透过血脑屏障）。

Microfossil assemblages and foraminifer isotopes from the upper part of ODP Hole 807A on the Ontong Java plateau were studied to provide evidence for discussing Late Quaternary productivity variations with glacial cycles in the western equatorial Pacific.

通过研究翁通－爪哇海台ODP 807A孔顶部岩心微体古生物和有孔虫同位素的变化，探讨冰期旋回中赤道西太平洋晚第四纪古生产力的变化。

This paper makes a brief review on the technical advances in Quaternary geochronology achieved during the past over 20 years and their impacts on the timescale of recent human evolution.

晚期智人在中国出现的时间很可能不晚于西亚和南非，中国 4 0～ 1 0 0ka间人类化石的"缺环"，很可能只是测年技术系统误差造成的假象。

Origin of modern Homo sapiens ; Quaternary geochronology ; U-series dating ; speleothems ; Southern China

现代人类起源；第四纪年代学；铀系测年；新生碳酸盐岩；中国南方

Moderator: After exploring ancient scholars, the original 200 million years ago in the early Quaternary, widely distributed in our country of an ancient faunal groups, and their fossils have been discovered more or less to Panda and represented a Gigantopithecus, called Panda - Gigantopithecus fauna.

主持人：经过古生物学者探讨，原来在200万年前第四纪初期，在我国广泛分布着一个古老的动物区系的类群，它们的化石已经或多或少被发现了，以熊猫及一种巨猿为代表，称之为熊猫——巨猿区系。

The next is the effect of exogenic process under marginal glacial environment during Quaternary Glacier Epoch

第二是第四纪冰期时冰缘环境下的外营力作用

The climatic fluctuation after the Quaternary Glacial Epoch and the frequent human activities caused further decline of the fragmented population in small scale.

第四纪冰川时期，强烈的气候变迁，造成银杉种群的大尺度减少，并导致其间断分布于我国亚热带山地；冰后期以来的气候波动及近代剧烈的人类活动使已经片断化的银杉种群数量进一步下降。

The strong evidence of outwash existed in the Mang'ai depression is of great importance to the research on the evolution and paleoclimate, paleogeography of Qingzang plateau of Quaternary glacial epoch of China.

柴西茫崖坳陷第四纪冰水沉积证据充分，对于研究我国第四纪冰期及青藏高原的形成演化、古气候、占地理具有重要意义。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。