气孔的

That's because wormholes are portals through the fabric of space and time.

这是因为气孔是通过空间和时间的正门。

However, cast iron easily causes cracking and gas cavity, so laser wire-feeding overlaying welding in cast iron is limited in application.

但由于铸铁件在激光堆焊中存在容易开裂、产生气孔等缺点，因此激光送丝堆焊的应用受到限制。

Adapting for processing wire-cut starting hole in various metal and skuperhard conducted meterial, jet hole, filtering hole, gas hole, group hole, deep and thin hole as well as super deep hole.

本机床使用于多种金属、超硬导电体材料的切割初始孔、喷嘴孔、滤孔、气孔、群孔等细微孔、超深孔加工。

The main results were as follows: The Xinjiang floating dust-fall caused the winter wheat leaf upper epidermis stoma density to significantly decrease.

主要研究结果如下：新疆浮尘使拔节期和盛花期的冬小麦叶片上表皮气孔密度显著减少。

Porosity can occur anywhere in the weld metal or the base metal.

气孔能在焊缝金属或母体金属中的任何地方产生。

Tank wagons; vent holes and drain plugs on pressurized gas tank wagons with bottom discharge

槽车。排气孔和闭锁螺栓。有下部卸空装置的压缩气体槽车

Gas outlet ports are formed at opposite longitudinal sides of the valve housing.

在阀壳的相对纵向侧面形成出气孔。

Under the clear days, the diurnal variation of Pn and transpiration rate existed in Mango are the two-peaked curve.

影响Pn日变化的生理生态因子是光强、气孔导度、温度、相对湿度、胞间CO2浓度。

The result showed that top grafting significantly increased growth vigor, photosynthetic rate, stomatal conductance and intercellular CO2 concentration as well. Compared with top grafted trees, the scion seedlings had higher non-photochemical quenching, but had lower maximum fluorescence, photochemical quenching and Yield.

结果表明，实生苗高接后生长势显著增强，其单叶面积及叶片厚度极显著增加，净光合速率、气孔导度、胞间CO2浓度均有所提高；自根苗的非光化学淬灭极显著高于高接树，最大荧光产量、光化学淬灭和实际光化学量子产量显著低于高接树。

Foliar carbon isotope composition δ~(13C, long-term water use efficiency, photosynthesis, and stomata of different Populus deltoids clones were studied under different water treatments.

该文测定并研究了不同水分处理下，不同黑杨无性系的长期水分利用效率、叶片δ~(13)C、光合作用、气孔及其相互关系。

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％。