hr.

Appropriate dilutions were made on tryptone-glucose-yeast extract-agar (Difco) and incubated at 37 C for 48 hr before counting.

这一法并不影响在带上未封闭孢子计数。

The role of HR was to devise various schemes and policies so as to channelize the employees' behavior along a desired path.

人力源角色就是要设计各种不案和政策来引导员工行为，使其能够走上预期道路。

Human Peripheral blood exposed with tritiated water at variousdoses for 54 hr was examined to observe the chromosome and chromatid abe-rrations at metaphases in the first mitosis of lymphocytes.

将人体外周血在不剂量氚水中培养54小时,观察到淋巴细胞第一次有丝分裂中期染色体型及单体型畸变。