English translation for "pretrenching"

预挖沟

Similar Words：

"pretreatment of water" English translation, "pretreatment phase" English translation, "pretreatment plant" English translation, "pretreatment tank" English translation, "pretrematic" English translation, "pretretment equipment" English translation, "pretrial" English translation, "pretrial conference" English translation, "pretrial conferences" English translation, "pretrial discoveryy" English translation