1) Pachypteris
厚羊齿属
2) Palaeoweichselia
杂羊齿属
1.
Palaeoweichselia tianjuensis from Hongtuwa Formation in Tianzhu County, Gansu Province.
yuani sze之后,在我国所报道的又一个纳缪尔期杂羊齿属化石,Palaeoweichselia 属可能是我国西北地区特有的一个晚石炭世早期标准化石属。
4) Tooth thickness
齿厚
1.
The stress and tooth flank clearance distribution of the gear under various conditions has been made clear,The correction, reasonable tooth thickness reductionand interference can be decided,and the dependable theory basis is provided for the design of the locomotive gear coupling.
本文采用逐点分析计算法，对韶山＿８型机车大功率齿轮联轴器的修形、齿面接触点轨迹及受力情况进行了分析，明确了各工况下轮齿的静力状态及齿面间隙量分布，可以确定修形方式及齿厚减薄量的合理性及干涉等问题，为机车用齿轮联轴器的设计工作提供了理论计算依据。
2.
Deviation measurement of tooth thickness and conical point of straight bevel gear by using steel bail was studied and approached.
对钢球法测量直齿圆锥齿轮齿厚及锥项位置误差检测进行了研究和探讨。
6) born in the year of the sheep
属"羊"
1.
Why the person born in the year of the sheep will have a tragic lot?;
属“羊”的人为什么“命苦”?
补充资料：缠齿羊
1.蔬食的别称。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条