The white cliffs of Dover, for example, are white because they contain limestone, or calcium carbonate.
比如，多佛的白色峭壁之所以为白色就是因为含有石灰岩或碳酸钙。
Most water contains some carbon dioxide making it a weak acid that can eat away at the calcium carbonate in limestone.
大多数水含有一些二氧化碳，使得水显弱酸性，能够侵蚀石灰岩中的碳酸钙。
Most water contains some carbon dioxide, making it a weak acid that can eat away at the calcium carbonate in limestone.
大多数水含有一些二氧化碳，使得水显弱酸性，能够侵蚀石灰岩中的碳酸钙。
When water from heated underwater hot springs rich in calcium meet with the carbonates in lake water, the result is calcium carbonate, also known as limestone.
当地下含钙丰富的温泉热水与湖水中的碳酸盐相逢时，就会生成碳酸钙，又称石灰岩。
The stuff is tough as a rock (limestone is made primarily of calcium carbonate), but it dissolves instantly in acid.
这种物质硬如磐石（石灰石主要就是由碳酸钙构成的），但易溶于酸。
They would leave subtle clues in the isotopic composition of the limestone by shifting the ratios of light to heavy carbon and oxygen atoms in its calcium carbonate.
因为如果是那样的话，阳光将会被转换成大量的碳、氧原子保存到石灰岩中的碳酸钙里，而事实却是，岩层的同位素组成（Isotopic composition）中没有留下任何蛛丝马迹。
The calcinations regulation of limestone and the concentration of calcium hydroxide solution have effects on the granularity of the calcium carbonate crystal.
石灰石原料的煅烧制度和氢氧化钙溶液的浓度将影响碳酸钙结晶的粒度。
The calcium conversion ratio of shells and limestone are increasing with the increase of SO2 concentration and the extending of reaction time.
随so2浓度的增加、反应时间的增加，贝壳与石灰石的钙转化率增加。
Calcium aluminate fluxes can be produced from various mineralogical precursors such as lime or limestone and bauxite or aluminum dross, and in different physical forms such as sintered or fused.
铝酸钙熔剂可由各种矿物组成。例如：石灰(或石灰石)和铝土矿(或铝)，并且有不同的形态(如：烧结态或熔态)。
Whereas, the desulfuration performance of Calcium-based Sulphur-fixation Reagent limestone is affected by many factors such as physical factors and chemical factors.
但是作为脱硫剂的钙基固硫剂石灰石，因其物理化学性质的差异，导致其脱硫性能有很大的不同。
Water, containing dissolved calcium hydrogen carbonate, passes through the limestone and drops evaporate on the stalactite, increasing its length with a deposit of calcium carbonate.
含有溶解碳酸氢钙的水通过石灰石滴在钟乳石上蒸发，随着碳酸钙沉积物的增加不断增加着它的长度。
Limestone is rock composed of calcium carbonate.
石灰石是由碳酸钙所构成的岩石。
The maximum calcium conversion ratio of shell was about 71% while that of limestone was about 43%.
试验得到贝壳的最大钙利用率可达71%，而石灰石的钙利用率只有43%。
Thus we hold that the direct HCl dissolution method can replace the high temperature alkali fuse to analysis the calcium oxide and magnesian in limestone.
用盐酸直接溶样的方法可以代替高温碱熔的方法分析石灰石中的氧化钙和氧化镁的含量。
A gray powder that is a mixture of calcium silicate and calcium aluminate made by heating limestone (calcium carbonate) and clay (containing silicon. dioxide and aluminum oxide).
灰色粉末。是由石灰石(碳酸钙)和粘土(含二氧化硅和氧化铝)加热而成的，硅酸钙和铝酸钙混合物。
The ingredients of the product comprise zircon sand, limestone, calcium phosphate, calcium fluoride and borax.
产品成份为锆英砂、石灰石、磷酸钙、氟化钙、硼砂。
In its compounds calcium has valence 2. It occurs in limestone, chalk, marble, dolomite, eggshells, pearls, coral, and many marine shells as calcium carbonate, or calcite;
钙以方解石（碳酸钙）的形式存在于石灰岩、白垩、大理石、白云石、蛋壳、珍珠、珊瑚、钟乳石、石笋和许多海洋动物的壳体中。
In its compounds calcium has valence 2. It occurs in limestone, chalk, marble, dolomite, eggshells, pearls, coral, and many marine shells as calcium carbonate, or calcite;
钙以方解石（碳酸钙）的形式存在于石灰岩、白垩、大理石、白云石、蛋壳、珍珠、珊瑚、钟乳石、石笋和许多海洋动物的壳体中。
应用推荐