他收集编写了所有已知的化学元素表。
以化学元素表来衡量，地球的化学性质是不正常的，完全失去了平衡，却充满活力。
The chemistry of the Earth was out of kilter, wholly unbalanced by the periodic table, and alive.
在测试中你们可以使用，化学元素周期表的官方版本，你们应该大部分都有了吧。
You are allowed to use on the test the official version of the Periodic Table of the Elements which most of you should have by now.
在太阳和行星形成之前，所有元素周期表上的化学元素在太阳系的原始尘埃中四处漂浮着。
Before the formation of the sun and planets, all the chemical elements found on the periodic table were floating around in the primordial dust of the Solar System.
据英国广播公司报道，两种新元素被列入化学元素周期表中。
Two new elements have been added to the periodic table, BBC reported.
请大家拿出一张纸，默写化学元素周期表。
Everybody please take out a piece of paper and write the periodic table from memory.
表生作用过程中化学元素的迁移富集规律，是元素对环境条件变化响应的表现。
During surficial processes, the migration and enrichment of chemical element are response to environmental changes.
周期表(1869)：所有的化学元素按它们的原子量逐渐增加的顺序有组织地排列。
Periodic table (1869) : Organized array of all the chemical elements in approximately increasing order of their atomic weight.
镧系：周期表中从镧到镏（原子序数57～71）15种按顺序排列的化学元素系列。
Lanthanide: Any of the series of 15 consecutive chemical elements in the periodic table from lanthanum to lutetium (atomic numbers 57-71).
提要稀土是化学元素周期表中的镧系元素和化学性质相似的钇、钪共17种元素的统称。
ABSTRACT Rare earth is a collective name for 17 elements including ytterbium (Yb), scandium (Sc), and lanthanide series.
碳在化学元素周期表中排第六位。
Carbon occupies the sixth place in the periodic table of chemical elements.
周期表中铀以后的任何化学元素(原子序数大于92)。
Transuranium element Any of the chemical elements after uranium in the periodic table (with atomic Numbers greater than 92).
铈：化学元素，周期表iii b族过渡金属中丰度最大的稀土金属。化学符号Ce，原子序数58。
Cerium: chemical element, a rare earth metal of the lanthanide series (hence having many properties of the transition elements), chemical symbol ce, atomic number 58.
铬：周期表VIb族金属化学元素，是过渡元素元素之一，化学符号Cr，原子序数24。
Chromium: Metallic chemical element, one of the transition elements, chemical symbol Cr, atomic number 24.
铬：周期表VIb族金属化学元素，是过渡元素元素之一，化学符号Cr，原子序数24。
Chromium: Metallic chemical element, one of the transition elements, chemical symbol Cr, atomic number 24.
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