The synthesis, structure, properties and process interaction of low k dielectrics are reviewed. Characterization techniques for low k dielectric films are summarized.

Nowadays, in the manufacturing of microelectronic components fluorocarbon plasma was widely used in low K a-C: F: H film deposition and the etching of SiO_2, Si and other related materials.

目前，碳氟等离子体被广泛用在器件的微细加工过程中，如沉积低介电常数的氟化非晶碳薄膜，刻蚀SiO2、Si以及其它相关材料。

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The difference among mineral K absorption proportion of wheat genotypes under low K condition is greater than that under high K condition.

在低钾条件下，吸收矿物钾量的比例差异大于高钾条件下吸收的矿物钾比例。

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The achievements to research the 65 nm/ 45 nm technology, the 157 nm F2 stepper technology, high k and low k insulating material are introduced in this paper.

介绍了65nm/45nm工艺的研究成果、157nmF2stepper技术、高k绝缘层和低k绝缘层等技术。

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Chlorophyll content per unit area of the flag leaf of low K treatment was slightly higher than that of middle and high K treatments, but the former decreased rapidly along with maturity and senescence of the leaf.

试验结果：（1）低钾叶片的叶面积减小而比叶重增高，抽穗后剑叶单位面积的叶绿素含量在前期稍高于施钾处理，但随着叶片的成熟与衰老其含量即迅速下降；

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The results indicate that these mutated genes may be involved in different signaling pathways in plant responses to low K~+ stress.

这一现象暗示不同的突变基因可能处于不同的信号转导途径中，它们对植物钾营养进行调节的方式可能不同。

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Some root morphological parameters, root activity and yield of 94065-2 were superior to those of 95137 under low K stress.

结果表明：低钾条件下，94065-2在部分根系形态参数、根系活性及生物学产量方面均显著优于95137；

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High Na and low K intakes are specific defects of Chinese diets.

高Na低K一直是我国膳食的缺陷；

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In low K value area, the little deformation will lead to bad permeability.

层K值低的地区煤层变形弱，裂隙相对不发育渗透性差。

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N, P, K uptake and utilization of rice and kinetics of soil available N, P, K under different low K stress conditions embedded in a long term site specific fertilizer K experiment ( 1998-).

在长期定位钾肥试验的基础上，不同钾胁迫条件下，水稻对氮、磷和钾的吸收和利用效率以及土壤有效氮、磷、钾养分的动态变化（2002，晚稻）。

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There are two pairs of competitive factors in the F doped porous low k silicamaterials: porous and mechanical strength, porous and electrical property.

在低k的多孔掺F氧化硅材料当中，存在着两对竞争因素：多孔与机械强度，多孔与电学性质。

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Breakdown Characteristics of SOI LDMOS High Voltage Devices with Variable Low k Dielectric Layer

可变低k介质层SOI LDMOS高压器件的耐压特性

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The effect of Mg and K contents on physiologically potassium-deficient leaf blight of papaya plant was studied by investigation and sampling in the fields with low K and high Mg and chemical analyses in the laboratory.

采用田间调查、采样及其室内分析与田间试验相结合的方法，在低钾而高镁的土壤上，从植株各个部位探索番木瓜植株镁、钾营养变化对其生理性缺钾叶枯症的影响。

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Effects of pH and NH_4~+ on K~+ uptake by young crops under low K~+ concentration condition

低钾条件下pH值和NH4~+对作物幼苗K~+吸收的影响

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Preparation of Ammonium Chloride with Low K and Na Content

低钾钠氯化铵的研制

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Results showed that the neuronal survival was 199.11 ± 24.00 in the high K+ group, 47.56 ± 11.09 in the low K+ group and 201.11 ± 27.43 in the FK group.

结果表明：①幸存神经元数：高钾组199.11±24.00，低钾组47.56±11.09，FK组201.11±27.43；

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Conclusion YC 1 can block apoptosis of cerebellar granule neurons induced by low K+. The neuronal protection of YC 1 maybe belongs to a nongenomic action.

【结论】YC1抑制低钾诱导小脑颗粒神经元凋亡，YC1的这一作用可能属于一非基因效应。

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Process Integration of Low k/ SiC Materials with Cu Interconnects

低k/碳化硅材料与铜互连线的工艺整合

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Xi'an 8, Yuxi 832 and Yanshi 16 were K fertilizer sensitive wheat varieties, which had the features of lower yield in low K level and relatively bigger increments after the application of K fertilizer.

不同小麦品种对钾肥的响应程度不同，西安8号、豫西832、偃师16为施钾肥敏感小麦品种，具有低钾下产量水平低、施钾后产量提高幅度大等特点。

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Study on technology of producing ammonium chloride with low K and Na by hot water washing method

热水洗涤法生产低钾钠氯化铵工艺研究

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Compared with normal K supply, rice grain yield and shoot K accumulation were decreased, and K utilization efficiency was increased under low K supply.

低钾胁迫显著降低水稻的稻谷产量和各生育期地上部钾积累量，显著提高水稻的钾利用效率。

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