low density的例句大全

Other requirements are a low water absorption capacity and a sufficient raw density.

其他的要求就是低的吸水性和足够的原材料密度。

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Low Threshold Current Density InGaAs/ GaAs/ AlGaAs Strained Quantum Well Lasers

低阈值电流密度INGaAs/GaAs/AlGaAs应变量子阱激光器

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In order to give a low threshold current density, the curvature radius should be more about 150 μ m.

为了保持较低的阈值电流，本文建议曲率半径选择在15μm左右。

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The analysis of one particular structure has shown that a relatively low threshold current density of 832 A/ cm~ 2 can provide a threshold optical gain of 50/ cm at room temperature.

理论分析显示，用一个相对较低的阈值电流密度（832A/cm2）就能在室温下产生50/cm的阈值光学增益。

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The InGaAs/ GaAs strained quantum well lasers are able to work with extremely low threshold current density, high characteristic temperature and high COD limit, which make Ld lasers achieve higher output power and longer Ufe.

InGaAs/GaAs应变量子阱激光器具有级低的阈值电流密度、较高的特性温度和较高的光学灾变损伤阈值，这使得激光器具有更高的输出功率和更长的寿命。

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Our analysis of one particular structure has shown that a relatively low threshold current density of 832A/ cm2 can provide a threshold optical gain of 50/ cm at room temperature. We have also found that the characteristic temperature in this structure is as high as 136K.

分析显示，用一个相对较低的阈值电流密度（832A/cm2）能够实现室温下产生50/cm的阈值光学增益，而且这种结构的特征温度高于136K。

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Carbon nanotubes ( CNTs) are excellent field emission cold cathode materials with a low threshold electric field and a high emission current density, which make them attractive for potential application in panel display.

碳纳米管（CNTs）具有低的阈值电场和高的发射电流密度，是一种性能优良的冷阴极材料，在平面显示领域具有潜在的应用价值。

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The carbon nanotube ( CNT) is a kind of cold cathode material with excellent field emission performance. It has a low threshold electric field and a high emission current density which make it attractive for the potential application in the flat panel display.

碳纳米管是一种性能优良的场发射冷阴极材料，具有低的阈值电场和高的发射电流密度，在平板显示领域具有广阔的应用前景。

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Results Three months later, thymic index and T_4 were decreased dramatically in low iodine group. However, the significant changes in volume density and numerical density on area of thymic CK19~+ epithelial cells were not observed.

结果实验3个月后，低碘组大鼠的胸腺指数、T4显著降低，而CK19+上皮细胞的体密度和面数密度未见明显变化；

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The A horizon is characterized by a very dark colour, a very high content of organic matter, a very large water holding capacity, and a particularly low bulk density.

A层色暗、有机质含量和持水量都很高、容重特低。

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Both belts are enriched in LREE, large_ion lithophile elements and high charge density elements. However, the content of compatible elements such as Cr and Ni are very low.

南北两带岩体均富集轻稀土元素、大离子亲石元素和高场强元素，而Cr、Ni等相容元素含量很低。

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When the inertia of the system is rather large and interceptive frequency rather low, pulses of flow and density are considered to be in phase. The paper has quoted pro.

当系统惯性较大，振动截止频率较低时，可认为流量与密度脉动同相。

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Measurement of Thermal Expansion Coefficient for Phenolic Foam of High Density at Low Temperature

高密度酚醛泡沫绝热材料的低温膨胀率的测定

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Fire-resistant fiber spray layers have advantages such as high temperature resistance, coefficient of thermal conductivity low, less volume density, convenient for construction.

耐火纤维喷涂层具有耐高温、导热系数低、体积密度小、便于施工等优点，但同时也存在着涂层易剥落、易结晶粉化等缺点。

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Among them, a better quality beam can be easily obtained from the thermionic cathode, but the emission current density of the electron is relatively low, the cathode is short life due to an easily cathode poisoning, and the cost is expensive.

其中，热阴极获得的电子束的束流品质较好，但发射电流密度相对较低，阴极容易中毒，寿命较短，而且成本高。

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Confronting with problems such as low bulk density of sPP and reactor fouling, it has been emphasized that the studies of reaction engineering focused on developing an optimal process for catalyst support and special polymerization process are very important.

强调要实现sPP的工业化，尚需从聚合反应工程的角度，加强催化剂负载和聚合工艺的研究。

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The spinel manganic acid lithium is promising to be cathodes for Li-ion battery, due to its relatively high energy density and low toxicity.

尖晶石型锰酸锂具有无毒、能量密度高等特点，是下一代锂离子电池最有前途的正极材料之一。

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The second kind of heavy oil, resulted from active bottom water and biodegradation, is characterized by high density, high viscosity, high content of sulphur and low solidifying point.

第二类稠油主要因底水活跃，生物降解作用强烈而形成，具有高密度、高粘度、高含硫和低凝固点特点。

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In the south slope of hill, wind erosion intensity is comparatively low, soil bulk density low, soil fertility very comparatively high, and agricultural productivity also high.

在丘陵的南坡，风蚀相对较轻，土壤容重较小，土壤肥力相对较高，农业生产力也高。

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Low or lucent density of tumors was 7 cases;

2肿瘤密度减低或透亮（7例）；

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