气孔

The large amount of microporosity in calcium hexaluminate insulating refractory keeps its thermal conductivity at low levels from room temperature to 1 500 ℃,which makes calcium hexaluminate insulating refractory as a unique novel insulating material.

六铝酸钙(CA6)隔热耐火材料有着大量的微米级气孔，故其热导率从室温至1500℃均保持在较低水平，这使其成为一种独特的新型隔热耐火材料。

This paper has investigated the morphologies of the structure and formation mechanism of cast magnesium alloy with the software for analysis percentage of microporosity and field scanning electron microscopy.

铸造镁合金微孔形成机理从热力学角度分析符合气体形成模型；从动力学角度分析符合溶质再分配理论，从而验证氢气析出形成显微气孔机理。

During 6:00-10:00 o'clock period, climbing of photosynthetic rate P(subscript n was primarily caused by photosynthetic active radiation, leaf temperature, relative humid. Descending photosynthetic rate P(subscript n from 10:00 o'clock to 14:00 o'clock, especially "middy depression" was mostly caused by stomata factor.

早晨6：00-10：00期间，光合速率的上升主要是光合有效辐射、温度和相对湿度造成的。10：00-14：00期间，光合速率的降低，尤其是"午休"期间的下降，气孔因素是主要限制因子。

Hydrophytes with floating leaves can exchange gases with the atmosphere; many submerged hydrophytes, such as spiked water milfoil have no stomata, absorbing water and gases over their entire surface.

而很多沉水植物，如狐尾藻没有气孔，通过整个植株的表面吸收水分和气体。

Mineralizer such as TiO2,Cr2O3 and ZrO2 with proper amount, have a beneficial effect on the formation of magnesium aluminate spinel solid solution and the densification of samples, and decrease of porosity.

外加适量的TiO2、Cr2O3、ZrO2矿化剂能促进镁铝尖晶石烧结和晶粒生长，提高试样的体积密度和抗折强度，降低显气孔率。

Scientist: The point is that the worlds soils are a very large reservoir of carbon and two things can happen you can either manage it so they get bigger and therefore lock up carbon, or mismanage it so that pore gets smaller and in fact you release carbon and add to the CO2 in the atmosphere and it works both ways.

科学家：我们要指出的是，地球上的土壤是一个巨大的碳储存库，有两种情况会发生，一方面我们正确的利用它，增加它的容量以达到固碳减排的目的，另一方面我们的错误做法会使土壤中气孔变小，造成碳释放，增加大气中的二氧化碳含量，事实上这两种情况是同时存在的。

The strength of materials are controlled by porosity,modulus of elasticity,fracture energy and critical flaw sizes.

材料的强度是受气孔率、弹性模量、断裂能和临界缺陷尺寸控制的。

In this study, we investigated the rapid production of hydrogen peroxide (H2O2) induced by ABA in suspension culture cells of tobacco Nicotiana tabacum L.

最近的研究表明，在拟南芥保卫细胞中，NADPH氧化酶参与了ABA诱导的气孔关闭。

Foam ceramic was a new nonmental porous material , it has 70%~90% porosity and three dimension solid net framework structure.

泡沫陶瓷是一种孔隙率高达70%~90%，具有三维立体网络骨架结构和贯通气孔的新型非金属多孔材料。

RELIABILITY MTBF 600,000 hours Unrecoverable read errors 1 in 10^14 POWER Average idle current 5.0 watts Average seek power 7.30 watts Standby power 1.4 watts Sleep power 1.07 watts Maximum start current, DC 2.0 amps ENVIRONMENT Ambient Temperature Operating 0 to 60 degrees C Nonoperating -40 to 70 degrees C Maximum operating temperature change 20 degrees C per hour Maximum nonoperating temperature change 30 degrees C per hour Maximum operating case temperature 69 degrees C Relative Humidity Operating 5 to 90 Nonoperating 5 to 95 Maximum allowable humidity change 30 per hour Altitude Operating altitude -60.96 meters (-200 feet) Operating altitude 3,048 meters (10,000 feet) Nonoperating altitude -60.96 meters (-200 feet) Nonoperating altitude 12,192 meters (40,000 feet) Shock Operating vibration 0.50 Gs Operating Shock 63 Gs at 2 msec Nonoperating Shock 350 Gs at 2 msec Vibration Operating vibration 0.5 Gs at22-350 Hz Nonoperating vibration 5.0 Gs at 22-350 Hz ACOUSTICS Acoustics 2.6 bels Acoustics 2.7 bels

可靠性 平均无故障工作时间六十点○万小时不可恢复读错误1 10 ^ 14 电力平均闲置电流五点○瓦特平均寻求权力7.30瓦特待机功耗一点四瓦特睡眠电力1.07瓦特最大启动电流，直流二点〇安培环境常温经营0至60摄氏度非经营性-40 ℃至70摄氏度最大运行温度变化20摄氏度，每小时非经营性最大温度变化30摄氏度，每小时最大运行外壳温度69摄氏度相对湿度操作5至90 非经营性5日至95 最大允许湿度变化每小时30 高原高空作业-60.96米（-200米）操作高度三〇四八米（ 10000英尺）非经营性高度-60.96米（-200米）非经营性高度一二一九二米休克操作振动0.50亚基操作震动 63亚基在2毫秒非经营性休克 350亚基在2毫秒振动操作振动0.5气孔at22 - 350赫兹非经营性振动5.0亚基在22-350赫兹声学声学 2.6分贝声学仅有2.7分贝

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！