随着深部油气藏的勘探和开发，深井及超深井的数量大幅度增加，而深井超深井在高温高压条件下，窄安全密度窗口内的安全钻井是当前国内外都未能很好地解决的重大技术难题。
While under the condition of high temperature and high pressure, the safe drilling in thin safe density window is the technical difficulty that can not be solved well around the world.
材料之间的结合决定了电池的特性，包括它的能量和功率密度，以及安全性、使用寿命和成本。
The combination of materials determines the characteristics of the battery, including its energy and power density, safety, longevity and cost.
我们面临的挑战是超越现在化学技术从而生产更安全、更便宜、更大能量密度的电池，这将是困难的。
The challenge is to move beyond the present chemistry to produce batteries that are safer, cheaper and have greater energy density. This will not be easy.
公司称他们的低能量密度激光和一系列防护措施能保证暴露在其中的人体处于安全范围之内。
The firm says the low power-density of its lasers and a series of safeguards ensures that human exposure remains within regulatory limits.
电解质是制备高功率密度和高能量密度、长循环寿命和安全性能良好的锂离子电池的关键材料之一。
Electrolyte was one of the key points which made rechargeable lithium ion batteries with high power and energy density, long cycling life and desirable safety.
当前，安全可靠、有利于环保、高功率密度、体积小、重量轻的新型二次锂电池正被广泛应用。
Nowadays, the novel secondary lithium battery is widely used for it is safe and reliable, small and light, good for environment protection with high power density.
通常讲，具有更少的晶体缺陷，更光滑的外形、更高的晶体密度，则有利于降低炸药的感度，提高安全性。
Usually, if explosive particles have less crystal defects, more smooth surface, and higher crystal density, the explosives have lower sensitivities and better safety.
因此，身体从骨骼中失去了钙离子，以消除这些多余的酸性毒素，以创造一个更加安全的环境，但从而降低骨质密度。
As a result, the body robs calcium from the skeleton in order to neutralize those excess acidic toxins to create a safer environment, but then resulting in a lower bone density.
对于沙漠工程，提高沙漠砂的干密度，做好构筑物的防渗排水，避免地基含水量增高，是保证工程设施安全、正常运行的关键。
For engineering in desert, the key measures for ensuring the safety and operation of engineering facilities are to increase dry density and enhance seepage so as to avoid the high moisture content.
它可以实现所需的交通密度，高速公路主线，并能使车辆行驶更安全、更安全。
It can achieve a desired traffic density along the mainline of a freeway, and can make vehicles travel more efficiently and safely.
次要的结束点包含骨矿物质密度，骨循环标志物，和安全结果。
Secondary end points included bone mineral density, bone turnover markers, and safety outcomes.
传统的支护方式使工作面支护密度强度下降，回收工作强度增加，制约了安全生产。
The traditional method make work density strength descended, recovering the work strength increase, making to invite the safety produce.
由于风能的能量密度低，具有不稳定性和随机性，控制技术是大型风力发电机组安全高效运行的关键。
Because wind energy has lower density, instability and randomicity, control is vital for safety and efficiency of a large-scaled wind turbine.
大型公共活动人口密度大、流动性强，极易引发安全事故，造成大量人员伤亡和恶劣社会影响。
Large public activity has the character of big population density and strong fluidity, which is liable to safety accident and causes big casualties and social impacts.
人群的密度估计对于建筑物的设计和人群安全至关重要。
Crowd density estimation is very important to building designs and crowd safety.
应用概率密度函数研究随机横浪中船舶航行的安全概率。
The safe probability of ship navigation in random beam wave is studied by the probability density function.
根据国内垫片标准规定的泄漏率指标和美国PVRC对连接系统划分的紧密度等级，尝试定义了法兰连接系统的安全性等级。
An attempt was made to define the safety grade of flanged connections according to target leakage rates described in domestic gasket standards and tightness rates of joints stated in PVRC of ASME.
结果表明该方法安全可行，能清晰地显示颧腺的位置、轮廓、形态和密度。
Results showed that this method was capable and safe. The position, outline, configuration and density of zygomatic gland and its duct could be clearly displayed on the films.
利用电晕线支撑部分和屏蔽管的静电屏蔽效应，可以改善电除尘器板电流密度分布，减弱反电晕，并可得到高电压低电流的安全运行状态。
By using this kind of shielding effects, the electric current density distribution can be improved, the back-corona can be reduced and the high voltage and low current state can be obtained.
某大型超市具有人员活动集中、火灾荷载密度较大以及疏散距离超长等特点，需要重视消防设计和安全分析。
Evacuation is quite difficult for a large-scale supermarket when fires happen because of the personnel activity concentration, bigger fire density and further dispersing distance.
由于临界热流密度(CHF)与反应堆安全密切相关，所以人们从实验和理论上都已经对该现象进行了广泛的研究。
Considering the relationship between the phenomena of critical heat flux (CHF) and the safety of nuclear reactor, the research of CHF on experiment and theory has been carried in detail.
结论高功率密度毫米波是治疗晚期癌症患者癌性症状的一种安全有效的治疗方法。
Conclusion The treatment of millimeter wave with high power density for cancer signs of late stage cancer patients was a safe and effective treatment method.
采用本发明，燃烧时不会产生有毒气体，烟密度低，材料的阻燃性能、安全性能和力学性能优良。
The fireproof polyolefin composition has excellent fire retarding performance, safety performance and mechanical performance, and produces no toxic gas and less smoke during combustion.
地区城镇人口密度与地区安全生产事故死亡率的关系微弱。
Moreover, the density of population has weak relation with the mortality of regional prnduetion safety accident.
一般认为DHA是安全的，不过有一些研究表明DHA会提高人的低密度脂蛋白(不好的胆固醇)水平。
DHA is generally considered safe, although in some studies it has raised the overall level of LDL cholesterol in subjects.
电解质是制备高功率密度、高能量密度、长循环寿命和安全性能良好的锂离子电池的关键材料之一。
Electrolyte is one of the key materials of synthesis of lithium ion battery of high density of power, high density of energy, long circular life and good capability of security.
目的控制鼠密度，保障首都国际机场口岸的公共卫生安全。
Objective To control rat density and ensure public health security at the capital airport.
目的控制鼠密度，保障首都国际机场口岸的公共卫生安全。
Objective To control rat density and ensure public health security at the capital airport.
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