base course

基本解釋

Base; road Base [highways]: The part of the road structure Below the Base course and above the sub-base.
路床[公路]：基層之下底基之上的道路結構部分。
The Semi-rigid Base course material made of Lime-fly-ash bound macadam has been widely used in highway construction of China for its high workability and notable economic benefits.
半剛性路面基層材料——二灰碎石以其優(yōu)良的工作性能和顯著的經濟效益在我國道路建設中得到了廣泛應用。
Cement-stabilized crushed stones course have two distinct advantages which are high intensity in base course and good moisture susceptibility, so it is used widely in our highway construction.
水泥穩(wěn)定碎石基層因其具有較高的強度和較好的水穩(wěn)定性等特點，在目前我國半剛性路面高等級公路的建設中得到廣泛的應用。

Now, of course, there are denominator issues here because we started with a much higher base rate than these other countries, but if you think about the size of the populations there, the number of people who are going to become diabetic in the next twenty-five years is really very frightening.
現(xiàn)在,當然這里存在著分母的問題,我國的增長基數(shù)比其他國家要大得多,因為一旦考慮到人口總量,在未來25年成為糖尿病人的人數(shù),就非常非常的驚人了
耶魯公開課 - 關于食物的心理學、生物學和政治學課程節(jié)選

Engaging a customer base is of course a very important part of social media.
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And of course a growing tax base would make it much easier to cover the construction costs.
FORBES: Silicon Valley Is Stuck In An Uncanny Valley Of Density
And she went in with a tremendous base of fundraisers, and of course the advantage of being Bill Clinton, former president's wife.
NPR: The 2008 Candidates and the Money Game

基層
Finally, the construction technical process and maintenance process on base course suiting the practical spot are presented that based on the evaluation of technology and economy.
從技術、經濟方面綜合考慮，提出與當?shù)貙嶋H的環(huán)境條件相適應的基層施工工藝及其養(yǎng)護措施。
路面下層

基層
In the garbage for urban road construction, this paper main study about use it for base course and subbase course of urban road.
在建筑垃圾用于城市道路方面,主要將拆遷現(xiàn)場產生的建筑垃圾用于城市道路的路基和底基層。
土木建筑工程
基層
承重層