We present a study of molecular outflows using six molecular lines (including ¹²CO/¹³CO/C¹⁸O/HCO⁺(J=1−0)and CS/SiO (J=2−1)) toward nine nearby high-mass star-forming regions with accurate known distances. This work is based on the high-sensitivity observations obtained with the 14 m millimeter telescope of the Purple Mountain Observatory in Delingha. The detection rate of outflows (including ¹²CO, ¹³CO, HCO⁺, and CS) is 100%. However, the emission of SiO was not detected for all sources. The full line widths (ΔV) at 3σ above the baseline of these molecular lines have the relationship > . ¹²COand HCO⁺can be used to trace relatively high-velocity outflows, while ¹³COand CS can be employed to trace relatively low-velocity outflows. The dynamical timescales of the ¹³COand CS outflows are longer than those of the ¹²COand HCO⁺outflows. The mechanical luminosities, masses, mass-loss rates and forces of all outflows (including ¹²CO, ¹³CO, HCO⁺, and CS) are correlated with the bolometric luminosities of their central IRAS sources.

我们提出了一种使用六种分子线（包括¹² CO / ¹³ CO / C ¹⁸ O / HCO ⁺（J = 1-0）和CS / SiO（J = 2-1））向附近9个高质量分子流出的研究已知距离的恒星形成区域。这项工作是基于使用位于德令哈（Deringha）紫色山天文台的14 m毫米望远镜获得的高灵敏度观测资料进行的。流出的检测率（包括¹² CO，¹³ CO，HCO ⁺和CS）为100％。但是，并未检测到所有来源的SiO排放。全线宽（Δ V）在3 σ这些分子线的基线上方的关系> 。¹² COand HCO ⁺可用于跟踪相对较高的速度流出，而¹³ COand CS可用于跟踪相对较低的速度流出。^13个CO和CS流出的动态时间尺度比^12个CO和HCO ⁺流出的动态时间尺度长。所有流出物（包括¹² CO，¹³ CO，HCO ⁺和CS）的机械发光度，质量，质量损失率和作用力与其中心IRAS源的辐射热发光度相关。