a gaseous mixture that is a homogeneous mixture of a compoun

The thin gaseous envelope that surrounds our planet is integral to the main tenance of life on earth.
薄的气囊,包围我们的星球是主要tenance不可或缺的地球上的生命.
the composition of the atmosphere is predominately determined by biological processes acting in concert with physical and chemical change.
大气的组成主要是由生物过程在音乐会表演与物理和化学变化.
Though the concentrations of the major atmospheric constituents oxygen and nitrogen remain the same,the concentration of trace species, which are key to many atmospheric processes are changing.
虽然主要的大气成分浓度的氧和氮都是相同的,物种的浓度跟踪,这是许多大气过程的关键是改变.
It is becoming apparent that man's activities are beginning to change the composition of the atmosphere over a range of scales,leading to, for example,increased acid deposition, local and regional ozone episodes,stratospheric ozone loss and potentially climate change.
它变得明显,人的活动也开始改变大气的构成范围尺度,导致,例如,增加酸沉积、当地和地区臭氧集,平流层臭氧损耗和潜在的气候变化.
in this part,we will look at the fundamental chemistry of the atmosphere derived from observations and their rationalization.
在本部分中,我们将看看大气的基本化学来源于观察和他们的合理化.

该句翻译：
Explain whether medicinal paraffin of the gaseous product contains smaller molecules?
从语法上来看应该没问题,是一个祈使句后加whether从句.因为我没接触过医学,分子学学科,只能尝试字面翻译了
呈气态产物状的药用石蜡是否包含较小分子?
如果按你说的Gaseous product of medicinal paraffin就应该翻译成：
药用石蜡的气状产品是否包含小型分子?

2/2 solenoid valve for neutral gaseous and liquid fluide 电磁阀适用于中性气体和液体
solenoid actuated with forced liftinig diaphragm valve 原理利用电磁线圈产生电磁力开关关闭件
connection:G1'' 连接1寸法兰连接（意思连接法兰的话用dn25的）
body:brass 壳体材质：黄铜
internal parts:stainless steel,brass内部材质：不锈钢 黄铜
seat seal:NBR 密封垫：橡胶
fluid temperature:max.90 介质允许温度最大90 （不能超过90）
ambiente temperature:max.50 工作允许环境温度最大50（不能超过50度）
operator pressure:0-16bar 工作压力：0-16bar
Kv-valve:12,5m3/h 流量：12,5m3/h
power:230VAC,40-60Hz 电源：230VAC,40-60Hz
incl.female connector 内丝链接
protection class:IP65 防护等级：IP65（露天安装或粉尘多场合应选用防水,防尘品）
normaly open 常开

1. 这是50克样品；
2. gaseous feul mixture：汽油混合品；
3. 包含0.43 摩尔裂解丙烷（C3H8）.
一份58克的气体燃料混合品,包含0.43 摩尔裂解丙烷.