中种子 meaning in Chinese
nakatane
Examples
- Dynamics of endogenous hormone in american ginseng seed during morphological after - ripening period and their regulation to embryo development
西洋参种胚形态后熟过程中种子内源激素变化动态及其对种胚发育的调节 - Karst ecosystem is a kind of vulnerable ecosystem , its vulnerability including mainly : 1 environment capacity is small , vegetation is difficult to recover after having been destructed , hydrologic movement is rapid and floods and droughts often occur ; 2 vegetation growth depends on the conditions of eco - environment overly , which are affected by environment obviously ; 3the positive evolve of eco - environment relies on the recover of vegetation , 4the methods of water resource use and land use lack of rationality . these vulnerabilities are be magnified by climate changes
岩溶生态系统是一种脆弱的生态系统，它的脆弱性主要表现在：环境容量小，植被遭破坏后很长时间才能恢复，以及水文过程变化迅速，旱涝时常发生；植被生长过度依赖于生境条件，但生境条件受到环境影响明显；生态环境的良性演化依赖植被的恢复；水资源利用与土地利用方式间缺乏合理性，如刀耕火种、过渡开垦造成生态环境中种子库严重丢失，物种多样性受到影响，植被演化趋于单一或种群退化。 - The main context of this paper is improving the precision of the disseminator . through analyzing the motion and construction parameter , making sure of the factor of working property , the motion equations of seed were established , and then the mathematical patter of main parameters were established . using of vb , we compiled procedure to simulate the motion of seed in the working process , finding the main factor that affect on the working property of the disseminator , then optimal designing of parameters of the device was laid
通过对排种轮的充种极限速度、清种始角、护种始角、排种器的投种口尺寸、型孔的尺寸等运动参数和结构参数进行分析，总体了解排种器结构参数和运动参数对其工作性能的影响，建立种子的运动方程，进而建立各主要参数(充种速度、清种角、护种角等)的数学模型，运用计算机辅助分析( caa )方法，通过visualbasic编制程序，对排种器工作过程中种子的运动进行动态模拟，找出影响排种器工作性能的主要因素，并对其参数进行优化，为合理地优化设计奠定了基础。 - Based on analysis of the forces exerted to seeds in metering device during working procedure , the theoretical calculation equations for beginning and end angles of seed cleaning in scoop metering device with declined disc were established , and the impact of construction and working parameters on seed filling and cleaning were investigated
摘要以排种器工作过程中种子的受力分析为基础，建立了排种器清种起始角和清种结束角的理论计算公式，分析了倾斜圆盘勺式精密排种器结构参数和工作参数对充种和清种性能的影响。