n.子基,底基,底基层;
英文例句/中文翻译:
a study on the application of fly ash to the pavement subbase of
粉煤灰用于中川高速公路路面基层的研究
check and evaluation of quality in stabilized soil base and subbase
稳定土基层和底基层的质量检验和评定
lateral segments obliquely flabellate, unequally 2-parted to subbase.
侧裂片斜扇形的,不相等的2深裂在近基部。