Grindstone

"Yanpan" and "Legou":the Word "Pangu" Originated from the Grindstone Worship and Gourd Worship of the Ancestors of Zhuang and Dong Ethnic Group——Tenth of Research on Pangu Myth Origin;

本文在阐述壮侗语民族先民磨石崇拜和葫芦崇拜的基础上,指出盘古一词源于壮族先民对磨刀石(咽盘)和葫芦(勒勾)的称呼,其意指兄妹进葫芦躲过洪水灾难后结婚生下形似磨刀石的肉团,剁碎后撒向山野变成人。

The Content and Distribution of Seven Primary Ions in Surface Sediments from Modaomen Estuary of the Pearl River;

珠江磨刀门河口沉积物中主要离子含量及其分布

Hydrodynamic Change with the Topographic Evolvement in the “Modaomen” Estuary During the Last Forty Years;

四十年来磨刀门河口水动力对地形的响应

The Recent Evolution of Modaomen Estuary and its Effect on Flood Drainage;

磨刀门河口近期演变及其排洪效应

Hydrologic characteristics and estuarine dynamic process during the dry season in Modaomen Estuary of the Pearl River;

珠江口磨刀门枯季水文特征及河口动力过程

Characteristics of bed sediments during the dry season in the Modaomen estuary of the Pearl River;

珠江口磨刀门枯季表层沉积物特征

The practical CAD technology to manufacture high accuracy relief grinding cutters is put forward.

提出了方便快捷地加工高精度铲磨刀具的CAD实用工艺 ,给出了改善刀具切削性能和增加重磨极限(寿命 )的方法及计算实例。