ppm.

ppm.的基本解释

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[医] 兆比率(百万分之几)

与ppm.相关的网络例句 [注：此内容来源于网络，仅供参考]

The results indicated that: the water content of product decreased from 2580 PPm to 50 PPm by sweep gas method in the water/chloromethane system and the separation factor of water/chloromethane was 74800; the water content of product decreased from 2580 PPm to 36 PPm by vacuum method in the water/chloromethane system and the separation factor of water/chloromethane was 32500; the separation factor and the flux of the dehydration of dichloromethane were 39900 and 0.172 kg·m~(-2)·h~(-1),respectively; the separation factor and the flux of the dehydration of trichloromethane at 50℃were 57300 and 0.564 kg·m~(-2)·h~(-1), respectively; the separation factor and the flux of the dehydration of carbon tetrachloride at 60℃were 68200 and 0.612 kg·m~(-2)·h~(-1),respectively.

结果表明：利用吹扫气法，对于水/一氯甲烷操作体系，其分离因数高达74800，产品水含量由进料侧的2580 PPm，降低到50 PPm；利用抽真空法，对于水/一氯甲烷操作体系，其分离(来源：93ABC论9090文网www.abclunwen.com)因数高达32500，产品的水含量由进料侧的2580 PPm，降低到36 PPm；对于二氯甲烷脱水体系，水/二氯甲烷分离因数和渗透通量分别为39900和0.172 kg·m~(-2)·h~(-1)；对于氯仿脱水体系，操作温度为50℃时，水/氯仿分离因数和渗透通量分别为57300和0.564 kg·m~(-2)·h~(-1)；对于四氯化碳脱水体系，操作温度为60℃，水/四氯化碳分离因数和渗透通量分别为68200和0.612 kg·m~(-2)·h~(-1)。

In the artificial rearing larval honeybee method, 1-day-old larvae were reared in laboratory and 0.1 - 100 ppm pyriproxyfen was added in larval food. A dose respondent effect was found in the larval development of the treated larvae. Results showed that 0.1 ppm pyriproxyfen reduced the eclosion rate of the reared larvae conspicuously, and 1 ppm pyriproxyfen reduced that 84.6% of eclosion honeybee appeared the condition of deformed wings. The 10 ppm pyriproxyfen treatment caused 53.8% melanic death in the pupal stage, and no honeybees succeed in eclosion.

在室内饲养幼虫方面，分别添加0.1-100 ppm百利普芬於幼虫食物中，结果显示0.1 ppm百利普芬即会显著降低饲养幼虫的羽化率，而且添加1 ppm百利普芬会有84.6%羽化蜜蜂出现残翅现象；添加10 ppm百利普芬则会造成53.8%蜜蜂在蛹期黑化而死亡，而且无蜜蜂羽化成功；100 ppm百利普芬则有50%蜜蜂在幼虫期死亡，50%蜜蜂在蛹期死亡，亦无蜜蜂成功羽化。

011 Ppm and the total average content of lead was 0.03 ppm (N.D.~0.09 ppm). The average contents of cadmium, mercury and lead for the first crop rice were 0.05 ppm N.D.

检测结果，镉含量总平均值为0.05 ppm （未检出～0.12 ppm），汞含量总平均值为0.002 ppm（未检出～0.011 ppm），铅含量总平均值为0.03 ppm（未检出～0.09 ppm）。

与ppm.相关的网络解释 [注：此内容来源于网络，仅供参考]

PPM Pages Per Minute：每分钟(打印)页数

DPI Dots Per Inch每英寸点数, 指打印机的分辨率. | PPM Pages Per Minute每分钟(打印)页数. | access time存取时间

ppm：百万分之一

科学家们用"百万分之一"(ppm)的算法来测量空气中温室气体的浓度,因为百分率的数字是很小的. 一个ppm���于00001%. 正是因为极小的含量能造成如此大的影响,所以人类工业创造的温室气体对气候将产生深刻的效应(二氧化碳组成了少于004%的空气含量,

ppm：百万分之几

ANSI/EIA 554-1-1996 百万分之几(PPM)平均出厂质量指标的评估ANSI/EIA 555-1988 验证符合规定质量等级(PPM)批量验收程序