PPM的例句大全

Atmospheric CO2 concentration has rapidly increased from about 280 ppm pre-industry to more than 380 ppm nowadays, and is predicted to reach 730-1020 ppm by the end of this century.

自18世纪中叶工业革命以来，大气CO2浓度由过去的约280ppm快速升高到目前的380ppm以上，并预计到本世纪末将达到730-1020ppm。

The mean value of total Mn in the soils of Hebei province is 569 ppm, lower than that of the whole China or the world.

河北省土壤全锰平均值569ppm，低于全国和世界平均值。

Immersing-treatment of Na_2SO_3 solution on spinach leaves affected the activity of superoxide dismutase in the leaves, lower concentrations ( 0.1, 1, 10 PPm) of the solution increased the activity and 100 PPm decreased the activity.

用Na2SO3溶液浸泡，可以影响菠菜叶片中超氧物歧化酶的活性。较低浓度（0.1、1、10ppm）的该溶液使酶活性增加，而100ppm的该溶液则降低此酶的活性。

apply once every two day at night, 2-5 ppm each time, from zoea stage continue till transfer of larvae fish to growing pound.

两天一次，2-5ppm于夜间实施，从眼幼虫期一直使用到可供放养的虾苗。

this has lead to exciting new developments, as evidenced in xerox's new 490 color continuous feed, a 980-ppm tandem-engine printer.

这已导致令人振奋的新发展，这体现在施乐公司新的490色连续饲料，一个980-百万分之串联引擎的打印机。

how ppm should be transformed into legal unit

ppm应如何改为法定单位

as a result, the optimal filtering algorithm corresponding to our ppm can be used to any state estimation problem of polynomial signals.

因此，提出的多项式信号的最优滤波算法适用于任何可以用多项式描述的信号的状态估计问题。

if the new standard with the new liner is in control, reanalyze the 220 ppm standard and the 700ppm standard.

如果新的标准与新的衬垫可以控制，再次分析220含量标准和700含量标准。

The tensile strength of abdominal wall in ePTFE group was lower than PPM group on the 7th day ( P < 0.05), and there was no difference later.

ePTFE组腹壁抗张强度在术后7天弱于PPM组（P＜0.05），嗣后两组无显著性差异。

on the legal issue of unilateral ppm environment related trade measures

单边PPM环境贸易措施法律问题研究

objective it is to discuss the curative effect differences of periauricular point massage ( ppm) on sensorineural deafness ( snd) between twice and once a day.

目的探讨2次/d与1次/d采用穴位按摩法治疗感音神经性聋的疗效差异。

objective: it is to evaluate the clinical application of periauricular point massage ( ppm) in treating sensorineural deafness ( snd).

目的：探讨穴位按摩治疗感音神经性聋的临床应用效果。

objective it is to research whether lingual training is necessary when the students suffered from sensorineural deafness have seen improvement in their listening due to treatment by periauricular point massage ( ppm).

目的探讨感音神经性聋患者经过穴位按摩治疗使听力提高后，是否需要再配合语言训练。

pretreatment with agno_3 ( 500 ppm) partly reversed the effects of ethrel and ethylene.

AgNO3（500ppm）预处理对乙烯利（乙烯）抑制小麦生长和杀雄等具有拮抗作用。

in comparison with ppm methods, simulation results show that dppm has excellent accuracy and efficiency.

仿真结果表明，该方案的路径重构效率和准确性均优于传统PPM方案。

common faults with ppm reach stackers spreader and the remedy

PPM集装箱正面吊吊具的常见故障与处理

concentrations of 10 ppm can be endured for only a few minutes and cause profuse lacrimation in all people.

10ppm的浓度，只需几分钟，就会使所有的人流泪不止。

at present, atmospheric co2 has reached 387 parts per million (ppm), well above the preindustrial figure of 280 ppm.

现在，大气里的二氧化碳浓度已经达到387ppm（1ppm为百万分之一），远大于工业革命之前的280ppm。

part per million (abbr. ppm)

兆北率（百万分之几）

the accuracy of laser gyro scale factor test can achieve ppm order of magnitude, which meets the needs of the normal test.

激光陀螺比例因子测试精度到达PPM量级，能够满足正常测试需要；