The PCD of starchy endosperm cells in wheat was a special form of PCD.
因此小麦淀粉胚乳细胞的PCD是一种特殊形式的PCD。
The variation regularities of cutting forces of the PCD tools with different geometric parameters in turning aluminum alloy are studied.
研究了不同几何参数的PCD刀具车削铝合金时切削力的变化规律。
The changes in aspects of morphologic and molecular biology, etc. occur in the PCD course, many inside and outside factors all may induce the occurrence of PCD of plant.
PCD过程伴有形态学及分子生物学等方面的变化，许多内、外因素都可诱导植物pcd的发生。
Therefore, this paper focused on the prediction of reservoirs by using seismic inversion and the prognostication of formation pressure by applying PCD method.
为此，本研究利用地震反演方法对本区的储层发育情况进行了预测，并利用PCD压力预测方法对地层压力系数进行了预测。
The Wheel PCD is the diameter of the studs from the centre of the wheel.
汽车轮毂PCD值是指螺栓安装孔的中心连接而成的截面圆的直径。
The successful application of PCD, PCBN glomerocryst materials in automotive manufacturing field are presented for the improvement of domestic superhard machining technology.
通过实例介绍了PCD、PCBN两种聚晶材料在汽车制造领域中的成功应用，旨在提高我国超硬加工的技术水平。
PCD tool is the best tool material for precise machining from points of the cutting force view.
从切削力这一因素来看，PCD是精加工颗粒增强铝复合材料的最佳刀具材料。
Combining the DTA curves and the SEM micrographs of PCD, we ascertained the starting oxidation temperature on DTA as the characteristic temperature of thermal stability.
结合聚晶金刚石的差热曲线和SEM照片，确定以差热曲线的起始氧化温度作为其热稳定性的表征温度。
Programmed cell death (PCD) is a common phenomenon at the special developing stages in the plants, which is an active dead process of the cells and is controlled by certain genes.
细胞程序性死亡(PCD)是植物体一定发育阶段普遍存在的一种现象，它受特定的基因调控，是主动的细胞死亡过程。
When the gene is inactivated, the plant can no longer regulate PCD, leading to cell death throughout the leaf and plant.
当这个基因被失活时，植物就不能再调节程序性细胞死亡过程，从而导致整个叶子和植物的死亡。
Research results indicate that there is an optimum grinding speed range during grinding PCD in which the lowest cost and higher efficiency can be realized.
研究结果表明，磨削pcd材料时存在一个最佳磨削速度范围，在此范围内磨削成本最低、磨削效率较高。
By analyzing the results of the experiments, it is considered that flank surface quality of PCD cutting tool directly influences machined surface quality, but has few effects on cutting tool's life.
通过对切削试验结果的分析，认为PCD刀具后刀面刃磨质量直接影响切削表面质量，而对PC D刀具寿命的影响则相对较小。
Objective the purpose of this study was to compare the functional and morphological changes in the cervical spine with protrusion of cervical disc (PCD) under different directions of traction.
目的：比较不同牵引方向对颈椎间盘突出症(PCD)的颈椎形态结构的影响。
But PCD in plants is different from that in animals in that the products from PCD in plants can either be phagocytosed by other cells or used for constructing the cell's own secondary wall.
也有一些不同，植物PCD的产物既可被其它细胞吸收利用；也可用于构建自身的次生细胞壁。
The influences of flank surface and edge quality of PCD cutting tool on cutting surface quality when machining nonferrous metal are studied in this paper.
本文主要研究PCD刀具加工有色金属时刃口及后刀面的刃磨质量对切削表面质量的影响。
Condclusion: the stability of the goat's cervical spine is not affected after PCD with CNL, but the procedure may cause disc space narrowing and disc bulging.
结论：经皮颈椎间盘切吸加溶核对山羊颈椎的稳定性无影响，但可引起手术间隙变窄和手术间盘纤维环膨出。
The cutting model of PCD cutting tool was analyzed and some experiments were done.
在分析PCD刀具切削模型的基础上进行了切削试验。
To solve these problems, this thesis did a lot of researches on the grinding mechanism of PCD cutting tool and the influences of parameters on grinding quality and efficiency.
基于上述原因，本文对PCD刀具的刃磨机理，刃磨工艺条件对刃磨质量及刃磨效率的影响进行了深入研究。
The ignition energy, efficiency, burning time and main chemical reactions of the pulsed corona discharge ignition(PCD) used on internal combustion engine are discussed in detail.
介绍了内燃机点火技术的研究进展，阐述了内燃机脉冲电晕放电点火新技术所涉及的点火能量、点火效率、燃烧时间和相关化学反应等问题。
As the material of grinding wheel dresser, the dressing Performance of PCD is near to that of a single crystal diamond, but itS price is relatively lower.
作为砂轮修整器的材料，PCD在性能上接近单晶金刚石，而在价格上却相对便宜得多。
A particle charge detector (PCD) was applied to determine the end point of colloidal titration for cationic starch having small charge density.
应用粒子电荷测定仪(PCD)的流动电位变化判定阳离子淀粉胶体滴定的终点。
These results demonstrated that PCD was involved in the process of systematic response, and the formation of PCD in cells might be similar to cytoplasmic cell death in animal cells.
这表明，黑松感染松材线虫后的系统反应过程中有PCD发生，其变化类似于动物细胞中的细胞死亡。
Analyses the quality and characteristic of the savageness diamond, synthetic diamond and PCD, compares the applications in the present exactitude machining.
对天然金刚石、人造金刚石单晶及人造金刚石聚晶的性质、特点以及在现代精密加工中的应用作了比较。
The effects of surface thermal oxidation on the minority carrier lifetime of Czochralski (CZ) silicon wafers are investigated by photoconductive decay (PCD) method.
用高频光电导衰减法（PCD）研究了热氧化钝化对直拉硅少子寿命的影响。
Some features of PCD in plants, including the changes in cell morphology and DNA degradation, are similar to those in animals.
植物的PCD和动物的PCD有许多共性，包括细胞形态和DNA降解等变化。
However, PCD induced by m-AMSA was extensive and the number of PCD positive cells increased with prolongation of exposure time.
但安吖啶诱导两株细胞程序化死亡的细胞数都随时间延长而逐渐增加。
PCD is important for the formation of structure and differentiation of plants.
植物发育过程中的PCD对植物自身形态建成和组织分化有重要意义。
The polycrystalline diamond (PCD) compact is composed of polycrystalline diamond layer and hard alloy layer.
PCD复合片由聚晶金刚石层和硬质合金层组成。
The polycrystalline diamond (PCD) compact is composed of polycrystalline diamond layer and hard alloy layer.
PCD复合片由聚晶金刚石层和硬质合金层组成。
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