材

This paper introduces the fatigue strength test of welded joints of 16MnR, 15MnVN and 18MnMoNb steels under small energy lash of heaps of times .

介绍了 16MnR、15MnVN及 18MnMoNb三种钢焊接接头及母材在小能量多次冲击条件下的疲劳强度试验情况。

Yes…hornbeam and dragon heartstring?

""是啊，角树材，龙心弦？

What can be said about the range of dates of the last heartwood rings?

怎样描述最后的心材环的日期范围。

The heartwood of this tree .

这种树的芯材

A raw material obtained from the heartwood of this plant, used in the preparation of tannins and brown dyes.

儿茶从这种植物的心材中提取的原料，用于生产单宁酸和棕色染料

Any of several small to medium-sized trees of Florida and West Indies with thin scaly bark and heavy dark heartwood.

任何一种小到中等尺寸的树种，生长在佛罗里达和西印度，有薄的鳞状树皮和重的黑色的心材。

A raw material obtained from the heartwood of this plant,used in the preparation of tannin s and brown dyes.

儿茶从这种植物的心材中提取的原料，用于生产单宁酸和棕色染料

A raw material obtained from the heartwood of this plant,used in the preparation of tannins and brown dyes.

儿茶从这种植物的心材中提取的原料，用于生产单宁酸和棕色染料厨房正在准备饭菜。

Heartwood and so on.it is used in biochemistry and organic chemistry research.

心材等。用于生物化学及有机化学研究。

The pure essential oil is produced from steam distillation of the roots and heartwood.

纯的檀香精油是由水蒸汽蒸馏法由心材及根部而得。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。