bearing bearing of pile
桩的承载力
聚对苯二甲酸乙二醇酯(PET)
聚对苯二甲酸乙二醇酯
conducting door-to-door visits
door- to-door transport
door-to-door canvassing for sale
door-to-door rent collection system
arsenic bearing carbon bearing refractory gold concentrate
bearing bush half for main bearing
core recovery from pebble-bearing and gravel-bearing rock formations
Distinguishing oil bearing reservoirs from water bearing reservoirs
“Chinese door knob”plum and peach cake
A pair of flexible leg door shelfs