令人惊讶的是，钙的补充品中可能受到铅的污染，因为主要的钙补充品像海贝和牛骨都可能被污染。
Surprisingly, calcium supplements may be contaminated with lead, because the sources of calcium in supplements—like seashells or cow bones—are contaminated.
同时，水泥中的钙离子也会吸收水分和二氧化碳，形成碳酸钙——碳酸钙是贝壳的主要成分。
Meanwhile, calcium ions in the cement also absorb moisture and carbon dioxide, forming calcium carbonate -- the material found in seashells.
例如萤火虫，它主要是依赖于镁离子这种辅助因子，而水母则依赖于钙离子。
Like fireflies, they too rely on a cofactor, in this case calcium ions rather than magnesium.
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。
The stuff is tough as a rock (limestone is made primarily of calcium carbonate), but it dissolves instantly in acid.
钙的一个主要功能是建立和维持骨骼和牙齿。
A major function of calcium is building and maintaining bones and teeth.
牛奶是钙和蛋白质的主要来源。
主要是由钙镁的硫酸盐、氯化物和硝酸盐等盐类所形成的硬度。
Is mainly composed of calcium magnesium sulfate, chloride and nitrate as the hardness of the form salts.
牛粪、过钙是基质中主要镉污染物质。
Cattle manure and calcium superphosphate were main polluting material.
在亚洲饮食中，像豆腐，谷类以及诸如绿花椰菜、甘蓝之类的蔬菜等非牛奶类食物给人体提供了主要的钙摄入。
In an Asian diet, non-dairy foods like tofu, grains and vegetables such as broccoli, kale and bok choy are the major contributors of calcium intake.
主要无机成分：钠，钾，氯，钙，镁，碱度，总硬度，总磷，氟化物，硫酸盐。
Major Inorganic Components: Sodium, potassium, chloride, calcium, magnesium, alkalinity, total hardness, total phosphorus, fluoride, sulphate.
石灰质鞭毛虫(coccolithophores)是一类覆盖在碳酸钙(粉笔的主要成分)岩石板状外壳上的微生物。
Coccolithophores are microorganisms that are covered in plate-like shells made out of calcium carbonate (chalk). The chalky shells reflect light, turning the ocean a milky turquoise color.
自然产生的磷酸盐中以磷酸三钙最为重要，它是磷灰石，骨骼和磷质海鸟粪的主要成分。
The most important naturally occurring phosphate is phosphate of lime or tri-calcium phosphate found as the chief ingredient of phosphatic rock bones and phosphatic guanos.
主要成分：各种糖类、酸类、蛋白质、维生素、钙、磷以及各种花色素的单、双葡萄糖苷等。
Main components: a variety of sugars, acids, protein, vitamins, calcium, phosphorus, and various flower pigments of single, double-glucosidase and so on.
钙剂缺乏是引起这种疾病的主要原因。
杏仁和西兰花都可成为你的鸟的钙主要来源。
Almonds and broccoli are good sources of calcium for your bird.
一个硅结合钙钛矿电池的主要挑战是钙钛矿必须是透明的，以便于光不被吸收而通过硅电池。
One of the main challenges with pairingperovskite cells with silicon ones has beenrendering theformertransparent, so that light they don't absorb can pass through tothe silicon cells beneath.
轮藻形成碳酸钙沉淀，这些沉淀可形成湖泊钙质泥灰岩的主要成分。
Stoneworts contain calcium carbonate deposits so extensive that they may form the major part of lake bottoms.
奶制品是钙的主要食物来源。
土壤、饲料高氟是加重钙磷代谢障碍引发跛行的主要因素。
High level F in feed and soil was the main pathogenic factor of it.
结果表明：黄长石、枪晶石、二价金属硫化物、铈钙硅石是构成高炉渣的主要矿物。
The practice showed that the blast furnace slags mainly consisted of melilite, cuspidine, bivalent metallic sulphide and Ce-Ca silica.
锰结核的主要矿物是具有隧道孔结构的钙锰矿以及具有层状结构的似水锰矿和水钠锰矿。
The major components of manganese nodules are todorokite with a tunnel-like structure and also buserite and birnessite with layered structures.
硅酸盐水泥包括主要的钙和铝硅酸盐。
Portland cement consists chiefly of calcium and aluminum silicates.
主要实验室检查包括血清钙、磷、碱性磷酸酶活性、甲状旁腺激素、尿磷和肝肾功能。
Main laboratory tests included serum calcium, phosphorus, alkaline phosphatase activity, parathyroid hormone, urinary phosphorus as well as liver and renal functions.
目的：由微生物和钙镁沉积所共同形成的污垢是实际水系统中混合垢的主要成份。
Purpose: The mixed fouling consisting of microbes and calcium or magnesium salts is the major part of the fouling in practical water systems.
主要观察指标：观察各组大鼠丘脑钙积聚与神经元损害的分布和程度。
MAIN OUTCOME MEASURES: Distribution and degree of calcium accumulation and neuronal damage in the thalamus of rats in each group.
主要观察指标：观察各组大鼠丘脑钙积聚与神经元损害的分布和程度。
MAIN OUTCOME MEASURES: Distribution and degree of calcium accumulation and neuronal damage in the thalamus of rats in each group.
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