Plant uptake of a metal depends primarily on the free metal ion activity.
植物对金属的吸收主要取决于自由态离子活度。
It occurs rarely as a free metal, occasionally in natural alloys (especially in meteorites), and in hundreds of minerals and ores, including hematite, magnetite, limonite, and siderite.
地壳中游离铁很少见，而通常存在于合金(特别是陨石)及数百种矿物中，包括赤铁矿、磁铁矿、褐铁矿和菱铁矿。
When the town got free postal delivery, Miss Emily alone refused to let them fasten the metal numbers above her door and attach a mailbox to it.
全镇实行免费邮递制度之后，只有爱米丽小姐一人拒绝在她门口钉上金属门牌号，附设一个邮件箱。
If not, you can buy a lofting structure that supports your bed on a metal frame. You can tuck your dresser or desk under your lofted bed to free up some floor space.
如果没有的话，你可以买一个金属制造的阁楼床架，以便将你的衣柜和书桌放在床下节省地面空间。
But the draining of one nation's gold credit base is not the only way in which the necessarily free movement of metal may upset the smooth functioning of the machine.
但是，一个国家的黄金信贷基数的枯竭，并不是必要的黄金自由流通导致机制运转失常的唯一途径。
Keeping 20 cars free of scratches and dents when steered by drivers unfamiliar with New York City traffic isn't easy either, but no sheet metal was harmed.
当20辆车都由不熟悉纽约市交通的记者们驾驶时，要让所有车都没有划痕和凹陷，也不容易，但所有车辆均毫发无损。
Testing for a passive surface is usually accomplished by looking for traces of free iron on the metal surface.
钝化表面的检测通常是通过查看金属表面的游离铁的踪迹来完成的。
The green "metal free tool" sign indicates that this machine is used in a part of the process prior to the addition of copper circuits.
绿色的“非金属添加工具（metal freetool）”标志意味着硅晶圆必须得经过这台机器的处理以后，才能去添加铜质电路。
The assumption is made that if there is no detectable free iron, the metal surface is clean enough for a uniform oxide film to develop.
假定如果没有探测到游离铁，则金属表面就是足够清洁以形成均一的氧化物膜的。
The Third Step (Acid Wash) is to remove free iron, metallic residues, oxides, and other corrosion products from the surface of the metal.
第三步(酸洗)：去除金属表面的自由离子、金属残渣、氧化物和其他腐蚀产物。
Usually there's free activity on the surface of metal because of electronic.
通常金属的表面由于电子可以自由的活动。
Various metal or metal the material composing a target is collide with by electrified ion is brought about the metal atom becoming the free particle deposition surface in mylar above.
各种金属或金属合成靶材被带电离子撞击，造成金属原子成为自由粒子沉积在上面的聚酯薄膜的表面。
The sloping metal ceiling panels free of penetration s read as a sweeping airfoil structure that floats above the space, drawing passengers along its arcing central spine.
屋顶倾斜的金属面板凸显在外，犹如漂浮在空间之上的巨型机翼，将乘客引入到其中心弧形脊椎中。
This article introduces one-step calculating method of multi-chemical reactions free enthalpy change and equilibrium constant and its application in metal smelting and other many chemical fields.
本文提出，多重化学反应自由焓变、平衡常数的一步计算法，可在金属冶炼和诸多化学领域中广泛的应用。
In the dining area, the team inserted a vent-free ethanol fireplace, which appears as open flames dancing on the metal countertop.
在餐厅区域，团队安置了一个无气孔的乙醇壁炉，看起来像明火在金属台面上跳舞。
A free floating metal ball shuttles according to the relative pressure at the two inlets.
内置自由浮动的金属球，可依照两个进口的压力情况自由滑动。
Service is important to any business, they promise their sales staff is available via phone or email to answer your questions or for you to request FREE fabric or metal samples.
服务是很重要的任何业务，他们承诺，他们的销售人员，可通过电话或电子邮件来回答你的问题，或为您申请免费织物或金属样品。
Auto transfer switch panels shall be free standing, indoor type, metal enclosed units with degree of protection IP42.
自动手动转换开关板应为独立式，室内型、金属外壳装置，保护等级为IP42。
This paper, based on the Fermi gas model, studies the energy of free electron gas in metal, discusses the highest energy, the average energy and the energy level density of free electrongas.
本文根据费米气体模型理论，研究金属中自由电子气的能量，讨论电子的最高能量、平均能量和电子气的能级密度。
It is a method of developing a surface on a part which is free of fragmented, amorphous or smeared metal from previous manufacturing operations.
这种表面在金相上完全没有任何前期机械加工所留下的碎片状的、不定形状的或斑点状的金属。
It is a soft, silvery white metal, not found free in nature and rarely used as the metal (except as a chemical reagent) because of its extreme reactivity.
由于它化学性质极端活泼，所以几乎不把它作为金属使用(除了做化学反应剂)。
The as-formed metal parts are fully dense, homogenous and free of defects.
所成型金属零件的组织均匀、致密，没有缺陷。
For non-flush mounting, a metal-free zone around the sensor must be allowed for.
对于非齐平安装一个金属感应器周围区，必须允许。
For non-flush mounting, a metal-free zone around the sensor must be allowed for.
对于非齐平安装一个金属感应器周围区，必须允许。
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