| 1. | Laboratory glassware ; t - bore stopcocks
实验室玻璃仪器.带型孔的旋塞 |
| 2. | Press tools . dies for shape holes
压力机工具.各种型孔模型 |
| 3. | Compression couplings - spherical liners - design and types of port end u and y
压紧联轴节.球形套. u型y型孔端的设计和型式 |
| 4. | Non - soldering compression couplings - double conical ring - design and type of port end x
非钎焊压紧联轴节.双锥环. x型孔端的设计和型号 |
| 5. | Plain bag punched handle of various shapes with or without side gusset or bottom gusset , or bags with soft or solid handle
平口袋打腰型孔、椭圆孔、圆孔等，袋口折边、侧面风琴；或底部风琴；或提手手挽袋 |
| 6. | Using these methods , the problems of optimum combination of many holes on a workpiece and the division of process steps in the strip layout of progressive die can be solved
运用这些方法，能够解决级进模工步设计中多型孔的优化组合排列以及工步数的划分问题。 |
| 7. | Cinematography - 8 mm film - sound - specification for recorded characteristics for magnetic sound record on 8 mm type s motion - picture prints and full - coat magnetic film perforated 8 mm type s
电影技术.第1部分: 8mm胶片.第4节:伴音.第6小节:打过排孔8mm s型孔的8mms型电影胶片和完全涂磁膜磁录音录制特性规范 |
| 8. | Our new device adopts a new style filling hole and a new filling method that makes the seed filling the hole along the wall of the seed - metering plate , which will assure seeds filling . at the same time , we lay more filling hole in a circle
同时将型孔设计在紧靠排种盘内壁的位置，有利于种子沿排种盘内壁下滑，对准型孔，顺利进入型孔，有利于充种率的提高。 |
| 9. | It was suggested by the analysis of the course of filling that the model aperture be elliptical in theory , the relationship equation between size of elliptical model aperture and the size of seed , diameter of seed throwing roll and rotary speed were induced
分析充种过程得知：型孔理论上应为椭圆型孔，并推导出椭圆型孔的大小与种子的大小、承种筒的外径和转速等之间的计算关系式。 |
| 10. | 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。 |
