1.【地】第四纪[系]的
2.四个一组的;由四部份组成的;第四的
3.【化】四元的;四价的;季的;【数】四进制的
1.【地】第四纪
2.【数】四进制
3.四;四个一组的东西;第四组组成部分
1.the fourth member of a set
2.the current period of geologic time, beginning 1.6 million years ago and characterized by the appearance and dominance of humans
1.consisting of four parts, or occurring in sets of four
2.bonded to four other nonhydrogen atoms or groups of atoms, or containing atoms bonded in this way
1.Forests in the Yellow River region have already decreased a great deal in Quaternary age, and the Loess Plateau began to be formed.
在黄河流域，第四纪时森林已大量减少，黄土高原已开始形成。
2.Quaternary structure The pattern in which two or more polypeptide chains are linked together to form a protein molecule.
由两条或更多的多肽链结合在一起形成的蛋白质的分子结构。
3.the Quaternary Period in which human beings began to appear on the earth went into Ice Age again, it was the last time.
在人类出现在地球上的第四纪再一次进入了冰河期，也就是最后一次。
4.Polymerizable quaternary ammonium surfactants are easy to modify the materials through the polymerization reactions.
因其具有可聚合双键结构，使其易于通过聚合反应对材料进行修饰。
5.Around the world, a variety of climatic proxies demonstrate late Quaternary climate instability in a wide range of global significance.
世界各地多种代用指标显示晚第四纪气候不稳定性影响广泛，具有全球意义。
6.The upper boundary of the model is phreatic surface, the bottom boundary is the base of the Quaternary.
模型的上边界为潜水自由表面，下边界为第四系底界；
7.An early form called Panel Call Indicator Pulsing used quaternary pulses to set up calls between a panel switch and a manual switchboard.
早期的一种形式叫做配电盘呼叫指示脉冲，它使用一些非标准格式的脉冲来设置两台配电盘交换机之间的呼叫。
8.The cool temperatures of the Quaternary may have allowed our brains to become much larger than those of our of hominid ancestors.
第四纪的凉爽气温或许让我们的大脑比人类远祖的大脑更大。
9.The deposit concealed under Quaternary system, and with plenty of underground. water.
铁矿床隐伏于第四系之下，地下水丰富，绝大部分赋存于第四系地层中。
10.In these thick-Quaternary-covering areas, does the date of the upper layers dislocated by the buried faults represent the latest faulting?
在这些第四系较厚覆盖区发育的隐伏断裂的上断点是否代表了断裂的最新活动时代？