气孔的

And study the influence of welding speed and active gas for welding porosity defect.

着重研究了焊接速度与活性气体对气孔形成的影响关系。

Bauxite based mullite was prepared with grade Ⅱ broken bauxite (3 mm) and broken coal gangue(3 mm) as starting material according to formula w(Al2O3)=68%~72% in bauxite based mullite grogs.

以Ⅱ等高铝矾土碎矿(≤3 mm)和煤矸石碎矿(≤3 mm)为原料，按照矾土基莫来石熟料w(Al2O3)=68%~72%的要求，将它们按一定比例混合配制成混合料，接着将混合料湿磨至0.044 mm以均化化学成分，经湿法挤泥成型、烘干后分别在1 550℃、1 600℃和1 700℃煅烧6 h，冷却后测定其显气孔率和体积密度以确定烧结温度。

The stomatal guard cells ofTI line are closure.

4T，代烟草叶下表皮保卫细胞气孔开度比对照的小。

Gaseous excretion takes place by diffusion through the stomata and lenticels.

气体通过气孔或皮孔释放的方式排出。

Annual production capacity of 200,000 pieces of their products with "no pores, trachoma" characteristics.

年生产能力200000余件其产品以&无气孔、沙眼&的特点。

Photosynthetic rate P(subscript n, transpiration rate, stomata conductance G(subscript s, active photosynthetic radiation, relative air humidity, air temperature and water use efficiency of three tree species Platycladus orientalis, Pinus tabulae formis, Tamarix chinensis were measured with a portable LI-6200 gas analysis system under natural conditions in the mountains adjacent to Lanzhou City.

利用LI-6200便携式光合测定仪对兰州市南北两山侧柏、油松、柽柳等3种绿化树种在自然条件下的光合速率P(下标 n、蒸腾速率、气孔导度G(下标 s、光合有效辐射、空气相对湿度、大气温度和水分利用效率进行了测定。

The lung can't grow new walls for these air sacs.

而肺部却无法产生新的气孔壁。

The paste is rubbed into the grain, let dry, and then any excess is removed by sanding.

这些胶填到气孔里，晾干，之后打磨去除多余的填料。

Most rosewoods have large, open pores and will need to be filled.

大多数玫瑰木有大的气孔需要填。

In order to decrease the air resistance during the process of falling, there arevent holes in the rammers.

为了减小夯锤下落过程中的空气阻力，夯锤都设有通气孔。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。